diff --git a/Cargo.lock b/Cargo.lock
index b25201540..7fee04c00 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -895,7 +895,7 @@ checksum = "fc652a48c352aef3ea3aed32080501cf3ef6ed5da78602a020c991775b0aff04"
 [[package]]
 name = "cadkernel"
 version = "0.1.0"
-source = "git+https://github.com/HakanSeven12/cadkernel.git?rev=6f3842eca010637ec7eb16688b6bd5ef3628ad83#6f3842eca010637ec7eb16688b6bd5ef3628ad83"
+source = "git+https://github.com/HakanSeven12/cadkernel.git?rev=a3185be8189d78d6e93b4ea5b9238b184da4f3cf#a3185be8189d78d6e93b4ea5b9238b184da4f3cf"
 dependencies = [
  "acadrust",
  "cavalier_contours",
@@ -906,7 +906,7 @@ dependencies = [
 [[package]]
 name = "cadkernel-constraints"
 version = "0.1.0"
-source = "git+https://github.com/HakanSeven12/cadkernel.git?rev=6f3842eca010637ec7eb16688b6bd5ef3628ad83#6f3842eca010637ec7eb16688b6bd5ef3628ad83"
+source = "git+https://github.com/HakanSeven12/cadkernel.git?rev=a3185be8189d78d6e93b4ea5b9238b184da4f3cf#a3185be8189d78d6e93b4ea5b9238b184da4f3cf"
 dependencies = [
  "nalgebra",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 3119234e3..0b8d05a61 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,8 +31,8 @@ rfd = "0.17"
 clap = { version = "4", features = ["derive", "string"] }
 env_logger = "0.11"
 acadrust = { git = "https://github.com/HakanSeven12/cadcodec.git", rev = "88fdb556dc8a292931a52b52ba42fc322dd39c23", features = ["serde"] }
-cadkernel = { git = "https://github.com/HakanSeven12/cadkernel.git", rev = "6f3842eca010637ec7eb16688b6bd5ef3628ad83", features = ["acis", "offset"] }
-cadkernel-constraints = { git = "https://github.com/HakanSeven12/cadkernel.git", rev = "6f3842eca010637ec7eb16688b6bd5ef3628ad83" }
+cadkernel = { git = "https://github.com/HakanSeven12/cadkernel.git", rev = "a3185be8189d78d6e93b4ea5b9238b184da4f3cf", features = ["acis", "offset"] }
+cadkernel-constraints = { git = "https://github.com/HakanSeven12/cadkernel.git", rev = "a3185be8189d78d6e93b4ea5b9238b184da4f3cf" }
 dwg-thumbnailer = { path = "crates/dwg-thumbnailer" }
 flate2 = "1"
 image = { version = "0.25", default-features = false, features = ["png", "jpeg", "bmp", "tiff"] }
diff --git a/src/app/update/command.rs b/src/app/update/command.rs
index acb34b13d..a23ddf81b 100644
--- a/src/app/update/command.rs
+++ b/src/app/update/command.rs
@@ -209,6 +209,8 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                                 GripEditMode::Lengthen
                                     | GripEditMode::Radius
                                     | GripEditMode::ArcLength
+                                    | GripEditMode::RectangleWidth
+                                    | GripEditMode::RectangleHeight
                             )
                         }) {
                             self.command_line.input.push_str(&s);
@@ -262,6 +264,8 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                                 GripEditMode::Lengthen
                                     | GripEditMode::Radius
                                     | GripEditMode::ArcLength
+                                    | GripEditMode::RectangleWidth
+                                    | GripEditMode::RectangleHeight
                             )
                         }) {
                             self.command_line.input.pop();
@@ -316,6 +320,12 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                         crate::scene::model::object::GripMenuAction::ArcLength => {
                             Some(GripEditMode::ArcLength)
                         }
+                        crate::scene::model::object::GripMenuAction::RectangleWidth => {
+                            Some(GripEditMode::RectangleWidth)
+                        }
+                        crate::scene::model::object::GripMenuAction::RectangleHeight => {
+                            Some(GripEditMode::RectangleHeight)
+                        }
                         _ => None,
                     };
                     expected_mode.is_some_and(|mode| {
@@ -368,6 +378,12 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                                 ) | (
                                     GripEditMode::ArcLength,
                                     crate::scene::model::object::GripMenuAction::ArcLength,
+                                ) | (
+                                    GripEditMode::RectangleWidth,
+                                    crate::scene::model::object::GripMenuAction::RectangleWidth,
+                                ) | (
+                                    GripEditMode::RectangleHeight,
+                                    crate::scene::model::object::GripMenuAction::RectangleHeight,
                                 )
                             )
                                 && grip.handle == pending.handle
@@ -407,13 +423,37 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                     let i = self.active_tab;
 
                     if let Some(grip) = self.tabs[i].active_grip.clone() {
-                        if grip.mode == GripEditMode::Stretch {
+                        if matches!(grip.mode, GripEditMode::Stretch | GripEditMode::RectangleResize) {
                             let dyn_locked = self.tabs[i]
                                 .dyn_fields
                                 .iter()
                                 .any(|field| field.buffer.is_some());
 
-                            let target = if dyn_locked {
+                            let target = if matches!(grip.mode, GripEditMode::RectangleResize) {
+                                grip.rectangle_frame.map(|(opposite, width_axis, height_axis)| {
+                                    let cursor_delta = self.tabs[i].last_cursor_world - opposite;
+                                    let mut width = cursor_delta.dot(width_axis);
+                                    let mut height = cursor_delta.dot(height_axis);
+                                    for field in &self.tabs[i].dyn_fields {
+                                        let value = field
+                                            .buffer
+                                            .as_ref()
+                                            .and_then(|buffer| crate::app::expr_eval::eval_number(buffer));
+                                        if let Some(value) = value {
+                                            match field.role {
+                                                crate::command::DynRole::Width => {
+                                                    width = value.abs().copysign(width);
+                                                }
+                                                crate::command::DynRole::Height => {
+                                                    height = value.abs().copysign(height);
+                                                }
+                                                _ => {}
+                                            }
+                                        }
+                                    }
+                                    opposite + width_axis * width + height_axis * height
+                                })
+                            } else if dyn_locked {
                                 // Distance only:
                                 //   keep the cursor's current direction.
                                 //
@@ -490,10 +530,32 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                                 }
                                 let delta = target - grip.last_world;
 
-                                let actions: Vec<_> = grip
-                                    .targets
-                                    .iter()
-                                    .map(|target_grip| {
+                                let actions: Vec<_> = if let Some((opposite, width_axis, height_axis)) = grip.rectangle_frame {
+                                    let opposite_id = (grip.grip_id + 2) % 4;
+                                    let mut edits = Vec::with_capacity(3);
+                                    for adjacent_id in [(opposite_id + 1) % 4, (opposite_id + 3) % 4] {
+                                        if let Some(original) = self.tabs[i]
+                                            .selected_grip_handles
+                                            .iter()
+                                            .zip(self.tabs[i].selected_grips.iter())
+                                            .find(|(owner, candidate)| **owner == grip.handle && candidate.id == adjacent_id)
+                                            .map(|(_, candidate)| candidate.world)
+                                        {
+                                            let d = original - opposite;
+                                            let axis = if d.dot(width_axis).abs() >= d.dot(height_axis).abs() {
+                                                width_axis
+                                            } else {
+                                                height_axis
+                                            };
+                                            edits.push((grip.handle, adjacent_id, GripApply::Absolute(
+                                                opposite + axis * (target - opposite).dot(axis),
+                                            )));
+                                        }
+                                    }
+                                    edits.push((grip.handle, grip.grip_id, GripApply::Absolute(target)));
+                                    edits
+                                } else {
+                                    grip.targets.iter().map(|target_grip| {
                                         let apply = if target_grip.is_translate {
                                             GripApply::Translate(delta)
                                         } else {
@@ -507,8 +569,8 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                                             target_grip.grip_id,
                                             apply,
                                         )
-                                    })
-                                    .collect();
+                                    }).collect()
+                                };
 
                                 for (handle, grip_id, apply) in actions {
                                     self.tabs[i]
@@ -1324,6 +1386,7 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                 if matches!(
                     item.action,
                     GripMenuAction::Stretch
+                        | GripMenuAction::RectangleResize
                         | GripMenuAction::MoveWithText
                         | GripMenuAction::MoveWithDimLine
                         | GripMenuAction::MoveWithLeader
@@ -1381,12 +1444,59 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                                         || (!is_dimension && g.is_midpoint),
                                 )
                             };
-                        self.tabs[i].active_grip = Some(GripEdit::single(
-                            popup.handle,
-                            grip_id,
-                            is_translate,
-                            g.world,
-                        ));
+                        if matches!(item.action, GripMenuAction::RectangleResize) {
+                            let rectangle = self.tabs[i]
+                                .scene
+                                .document
+                                .get_entity(popup.handle)
+                                .and_then(|entity| {
+                                    let AcadEntityType::LwPolyline(polyline) = entity else {
+                                        return None;
+                                    };
+                                    let (frame, plane) =
+                                        crate::entities::lwpolyline::rectangle_frame(polyline)?;
+                                    let opposite = polyline
+                                        .vertices
+                                        .get((popup.grip_id + 2) % 4)?
+                                        .location;
+                                    Some((
+                                        glam::DVec3::from_array(
+                                            plane.point_at([opposite.x, opposite.y]),
+                                        ),
+                                        glam::DVec3::from_array(plane.vector_at(frame.width_axis))
+                                            .try_normalize()?,
+                                        glam::DVec3::from_array(plane.vector_at(frame.height_axis))
+                                            .try_normalize()?,
+                                    ))
+                                });
+                            if let Some((opposite, width_axis, height_axis)) = rectangle {
+                                if self.grip_originals.is_empty() {
+                                    self.grip_originals = self.tabs[i]
+                                        .scene
+                                        .document
+                                        .get_entity(popup.handle)
+                                        .cloned()
+                                        .map(|entity| vec![(popup.handle, entity)])
+                                        .unwrap_or_default();
+                                }
+                                self.tabs[i].active_grip = Some(GripEdit::rectangle_resize(
+                                    popup.handle,
+                                    popup.grip_id,
+                                    g.world,
+                                    opposite,
+                                    width_axis,
+                                    height_axis,
+                                ));
+                                self.sync_dyn_fields();
+                            }
+                        } else {
+                            self.tabs[i].active_grip = Some(GripEdit::single(
+                                popup.handle,
+                                grip_id,
+                                is_translate,
+                                g.world,
+                            ));
+                        }
                     }
                     return Task::none();
                 }
@@ -1410,6 +1520,8 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                         GripMenuAction::Lengthen
                             | GripMenuAction::Radius
                             | GripMenuAction::ArcLength
+                            | GripMenuAction::RectangleWidth
+                            | GripMenuAction::RectangleHeight
                     ) {
                         if let Some((_, grip)) = self.tabs[i]
                             .selected_grip_handles
@@ -1439,6 +1551,16 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                                     popup.grip_id,
                                     grip.world,
                                 ),
+                                GripMenuAction::RectangleWidth => GripEdit::rectangle_width(
+                                    popup.handle,
+                                    popup.grip_id,
+                                    grip.world,
+                                ),
+                                GripMenuAction::RectangleHeight => GripEdit::rectangle_height(
+                                    popup.handle,
+                                    popup.grip_id,
+                                    grip.world,
+                                ),
                                 _ => GripEdit::lengthen(
                                     popup.handle,
                                     popup.grip_id,
@@ -1460,6 +1582,10 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
                             self.command_line.push_info(
                                 crate::t!("Specify point or enter arc length:").as_ref(),
                             );
+                        } else if matches!(item.action, GripMenuAction::RectangleWidth) {
+                            self.command_line.push_info("Specify point or enter width:");
+                        } else if matches!(item.action, GripMenuAction::RectangleHeight) {
+                            self.command_line.push_info("Specify point or enter height:");
                         } else {
                             self.command_line.push_info(
                                 crate::t!("Specify point or enter distance:").as_ref(),
diff --git a/src/app/update/dynamic.rs b/src/app/update/dynamic.rs
index bfe201e6a..89c8c0138 100644
--- a/src/app/update/dynamic.rs
+++ b/src/app/update/dynamic.rs
@@ -71,6 +71,10 @@ impl OpenCADStudio {
         //
         // Grip editing is not an `active_cmd`, so handle it before the normal
         // command-only path below.
+        let rectangle_frame = self.tabs[i]
+            .active_grip
+            .as_ref()
+            .and_then(|grip| grip.rectangle_frame);
         let grip_input = self.tabs[i]
             .active_grip
             .as_ref()
@@ -87,13 +91,26 @@ impl OpenCADStudio {
                 crate::scene::pick::grip::GripEditMode::ArcLength => {
                     (grip.origin_world, Some(crate::command::DynRole::Distance))
                 }
+                crate::scene::pick::grip::GripEditMode::RectangleWidth => {
+                    (grip.origin_world, Some(crate::command::DynRole::Width))
+                }
+                crate::scene::pick::grip::GripEditMode::RectangleHeight => {
+                    (grip.origin_world, Some(crate::command::DynRole::Height))
+                }
+                crate::scene::pick::grip::GripEditMode::RectangleResize => {
+                    (grip.origin_world, None)
+                }
             });
 
         if let Some((origin, scalar_role)) = grip_input {
-            let wanted_roles: Vec<crate::command::DynRole> = scalar_role.map_or_else(
-                || vec![crate::command::DynRole::Distance, crate::command::DynRole::Angle],
-                |role| vec![role],
-            );
+            let wanted_roles: Vec<crate::command::DynRole> = if rectangle_frame.is_some() {
+                vec![crate::command::DynRole::Width, crate::command::DynRole::Height]
+            } else {
+                scalar_role.map_or_else(
+                    || vec![crate::command::DynRole::Distance, crate::command::DynRole::Angle],
+                    |role| vec![role],
+                )
+            };
             let current: Vec<crate::command::DynRole> = self.tabs[i]
                 .dyn_fields
                 .iter()
@@ -109,12 +126,14 @@ impl OpenCADStudio {
                 self.tabs[i].dyn_active = 0;
             }
 
-            self.tabs[i].dyn_guide = if scalar_role.is_some() {
+            self.tabs[i].dyn_guide = if rectangle_frame.is_some() {
+                crate::command::DynGuide::RectSides
+            } else if scalar_role.is_some() {
                 crate::command::DynGuide::Radius
             } else {
                 crate::command::DynGuide::Polar
             };
-            self.tabs[i].dyn_anchor = Some(origin);
+            self.tabs[i].dyn_anchor = rectangle_frame.map(|frame| frame.0).or(Some(origin));
             self.tabs[i].dyn_ref = None;
             return;
         }
diff --git a/src/app/update/mod.rs b/src/app/update/mod.rs
index 1370c45c6..6064d01f8 100644
--- a/src/app/update/mod.rs
+++ b/src/app/update/mod.rs
@@ -1591,6 +1591,8 @@ impl OpenCADStudio {
                             crate::scene::pick::grip::GripEditMode::Lengthen
                                 | crate::scene::pick::grip::GripEditMode::Radius
                                 | crate::scene::pick::grip::GripEditMode::ArcLength
+                                | crate::scene::pick::grip::GripEditMode::RectangleWidth
+                                | crate::scene::pick::grip::GripEditMode::RectangleHeight
                         )
                     })
                     && !self.tabs[i].dyn_fields.is_empty()
diff --git a/src/app/update/viewport.rs b/src/app/update/viewport.rs
index 2867268c0..f9a0ff386 100644
--- a/src/app/update/viewport.rs
+++ b/src/app/update/viewport.rs
@@ -649,6 +649,7 @@ impl OpenCADStudio {
             mode: GripEditMode::Stretch,
             axis,
             targets,
+            rectangle_frame: None,
         }
     }
 
@@ -1579,6 +1580,30 @@ impl OpenCADStudio {
             ));
 
             let apply_started = Instant::now();
+            if let Some((opposite, width_axis, height_axis)) = grip.rectangle_frame {
+                let delta = snapped - opposite;
+                let mut width = delta.dot(width_axis);
+                let mut height = delta.dot(height_axis);
+                for field in &self.tabs[i].dyn_fields {
+                    let Some(buffer) = field.buffer.as_ref() else {
+                        continue;
+                    };
+                    let Some(value) = crate::app::expr_eval::eval_number(buffer) else {
+                        continue;
+                    };
+                    match field.role {
+                        crate::command::DynRole::Width => {
+                            width = value.abs().copysign(width);
+                        }
+                        crate::command::DynRole::Height => {
+                            height = value.abs().copysign(height);
+                        }
+                        _ => {}
+                    }
+                }
+                snapped = opposite + width_axis * width + height_axis * height;
+                self.tabs[i].last_cursor_world = snapped;
+            }
             let delta = snapped - grip.last_world;
             let menu_action = match grip.mode {
                 GripEditMode::Lengthen => {
@@ -1590,9 +1615,47 @@ impl OpenCADStudio {
                 GripEditMode::ArcLength => {
                     Some(crate::scene::model::object::GripMenuAction::ArcLength)
                 }
+                GripEditMode::RectangleWidth => {
+                    Some(crate::scene::model::object::GripMenuAction::RectangleWidth)
+                }
+                GripEditMode::RectangleHeight => {
+                    Some(crate::scene::model::object::GripMenuAction::RectangleHeight)
+                }
+                GripEditMode::RectangleResize => None,
                 GripEditMode::Stretch => None,
             };
-            let actions: Vec<_> = if menu_action.is_some() {
+            let actions: Vec<_> = if matches!(grip.mode, GripEditMode::RectangleResize) {
+                let Some((opposite, width_axis, height_axis)) = grip.rectangle_frame else {
+                    return Task::none();
+                };
+                let opposite_id = (grip.grip_id + 2) % 4;
+                let adjacent_ids = [(opposite_id + 1) % 4, (opposite_id + 3) % 4];
+                let mut edits = Vec::with_capacity(3);
+                for adjacent_id in adjacent_ids {
+                    let original = self.tabs[i]
+                        .selected_grip_handles
+                        .iter()
+                        .zip(self.tabs[i].selected_grips.iter())
+                        .find(|(owner, candidate)| {
+                            **owner == grip.handle && candidate.id == adjacent_id
+                        })
+                        .map(|(_, candidate)| candidate.world);
+                    if let Some(original) = original {
+                        let original_delta = original - opposite;
+                        let axis = if original_delta.dot(width_axis).abs()
+                            >= original_delta.dot(height_axis).abs()
+                        {
+                            width_axis
+                        } else {
+                            height_axis
+                        };
+                        let point = opposite + axis * (snapped - opposite).dot(axis);
+                        edits.push((grip.handle, adjacent_id, GripApply::Absolute(point)));
+                    }
+                }
+                edits.push((grip.handle, grip.grip_id, GripApply::Absolute(snapped)));
+                edits
+            } else if menu_action.is_some() {
                 Vec::new()
             } else {
                 grip.targets
@@ -3268,6 +3331,7 @@ impl OpenCADStudio {
             if matches!(
                 grip.mode,
                 GripEditMode::Lengthen | GripEditMode::Radius | GripEditMode::ArcLength
+                    | GripEditMode::RectangleWidth | GripEditMode::RectangleHeight
             ) {
                 self.grip_pending = None;
                 self.command_line.input.clear();
diff --git a/src/app/view/mod.rs b/src/app/view/mod.rs
index 263b60b65..42dd3c81e 100644
--- a/src/app/view/mod.rs
+++ b/src/app/view/mod.rs
@@ -984,6 +984,12 @@ bg={bg_ms:.1}ms n={view_count}"
                         crate::scene::pick::grip::GripEditMode::ArcLength => {
                             crate::scene::model::object::GripMenuAction::ArcLength
                         }
+                        crate::scene::pick::grip::GripEditMode::RectangleWidth => {
+                            crate::scene::model::object::GripMenuAction::RectangleWidth
+                        }
+                        crate::scene::pick::grip::GripEditMode::RectangleHeight => {
+                            crate::scene::model::object::GripMenuAction::RectangleHeight
+                        }
                         _ => return None,
                     };
                     let original = self
@@ -998,6 +1004,64 @@ bg={bg_ms:.1}ms n={view_count}"
                         w,
                     )
                 });
+                let rectangle_values = tab
+                    .active_grip
+                    .as_ref()
+                    .and_then(|grip| grip.rectangle_frame)
+                    .map(|(opposite, width_axis, height_axis)| {
+                        let delta = w - opposite;
+                        (delta.dot(width_axis).abs(), delta.dot(height_axis).abs())
+                    });
+                let rectangle_label_screens = tab
+                    .active_grip
+                    .as_ref()
+                    .and_then(|grip| grip.rectangle_frame)
+                    .and_then(|(opposite, width_axis, height_axis)| {
+                        let delta = w - opposite;
+                        let width = delta.dot(width_axis);
+                        let height = delta.dot(height_axis);
+                        let width_center = opposite + width_axis * (width * 0.5);
+                        let height_center = opposite
+                            + width_axis * width
+                            + height_axis * (height * 0.5);
+                        let rectangle_center = opposite
+                            + width_axis * (width * 0.5)
+                            + height_axis * (height * 0.5);
+                        let (vw, vh) = tab.scene.selection.borrow().vp_size;
+                        let (camera, bounds) = tab
+                            .scene
+                            .viewport_edit_frame((vw, vh))
+                            .unwrap_or_else(|| {
+                                (
+                                    tab.scene.camera.borrow().clone(),
+                                    tab.scene.active_model_tile_bounds(vw, vh),
+                                )
+                            });
+                        let project = |point| {
+                            camera.project(point, bounds).map(|screen| iced::Point::new(
+                                bounds.x + screen.x,
+                                bounds.y + screen.y,
+                            ))
+                        };
+                        let center = project(rectangle_center)?;
+                        let offset_from_center = |side: iced::Point, pixels: f32| {
+                            let dx = side.x - center.x;
+                            let dy = side.y - center.y;
+                            let length = dx.hypot(dy);
+                            if length > 1.0e-3 {
+                                iced::Point::new(
+                                    side.x + dx / length * pixels,
+                                    side.y + dy / length * pixels,
+                                )
+                            } else {
+                                side
+                            }
+                        };
+                        Some((
+                            offset_from_center(project(width_center)?, 14.0),
+                            offset_from_center(project(height_center)?, 18.0),
+                        ))
+                    });
                 let boxes: Vec<crate::ui::overlay::DynBox> = tab
                     .dyn_fields
                     .iter()
@@ -1005,6 +1069,14 @@ bg={bg_ms:.1}ms n={view_count}"
                     .map(|(idx, f)| {
                         let value = match (&f.buffer, live) {
                             (Some(b), _) => b.clone(),
+                            (None, _) if rectangle_values.is_some() => {
+                                let (width, height) = rectangle_values.unwrap();
+                                match f.role {
+                                    crate::command::DynRole::Width => format!("{width:.4}"),
+                                    crate::command::DynRole::Height => format!("{height:.4}"),
+                                    _ => String::new(),
+                                }
+                            }
                             // An angle step with a command-supplied live value
                             // (ARC span / direction) shows it in degrees.
                             (None, Some(lv)) if f.component == DynComponent::Angle => {
@@ -1033,6 +1105,13 @@ bg={bg_ms:.1}ms n={view_count}"
                             active: idx == tab.dyn_active,
                             locked: f.locked(),
                             role: f.role,
+                            center: rectangle_label_screens.and_then(|(width, height)| {
+                                match f.role {
+                                    crate::command::DynRole::Width => Some(width),
+                                    crate::command::DynRole::Height => Some(height),
+                                    _ => None,
+                                }
+                            }),
                         }
                     })
                     .collect();
@@ -1772,6 +1851,8 @@ bg={bg_ms:.1}ms n={view_count}"
                 crate::scene::pick::grip::GripEditMode::Lengthen
                     | crate::scene::pick::grip::GripEditMode::Radius
                     | crate::scene::pick::grip::GripEditMode::ArcLength
+                    | crate::scene::pick::grip::GripEditMode::RectangleWidth
+                    | crate::scene::pick::grip::GripEditMode::RectangleHeight
             )
         });
         let dyn_capturing =
diff --git a/src/entities/lwpolyline.rs b/src/entities/lwpolyline.rs
index 67fa6e418..e0c1c26bf 100644
--- a/src/entities/lwpolyline.rs
+++ b/src/entities/lwpolyline.rs
@@ -1,5 +1,7 @@
 use acadrust::entities::{LwPolyline, LwVertex};
-use cadkernel::geom2d::{signed_area, Curve, Polyline, PolylineVertex, Vec2};
+use cadkernel::geom2d::{
+    signed_area, Curve, Polyline, PolylineVertex, RectangleFrame, Tolerance, Vec2,
+};
 
 use crate::t;
 
@@ -884,31 +886,19 @@ fn set_revision_cloud_arc_length(pline: &mut LwPolyline, requested: f64) {
     pline.vertices = cloud_vertices(&points, magnitude * sign, width_ratios);
 }
 
+pub(crate) fn rectangle_frame(
+    pline: &LwPolyline,
+) -> Option<(RectangleFrame, cadkernel::space::Plane)> {
+    let planar = crate::entities::curve::lwpolyline_curve(pline)?;
+    let Curve::Polyline(polyline) = &planar.curve else {
+        return None;
+    };
+    let rectangle = polyline.rectangle_frame(Tolerance::default())?;
+    Some((rectangle, planar.plane))
+}
+
 pub(crate) fn is_rectangle(pline: &LwPolyline) -> bool {
-    if pline.common.extended_data.get_record("OCS_RECTANGLE").is_some() {
-        return true;
-    }
-    if !pline.is_closed
-        || pline.vertices.len() != 4
-        || pline.vertices.iter().any(|vertex| vertex.bulge.abs() > 1.0e-9)
-    {
-        return false;
-    }
-    let edges: Vec<Vec2> = (0..4)
-        .map(|index| {
-            let from = pline.vertices[index].location;
-            let to = pline.vertices[(index + 1) % 4].location;
-            Vec2::new(to.x - from.x, to.y - from.y)
-        })
-        .collect();
-    let lengths: Vec<f64> = edges.iter().map(|edge| edge.length()).collect();
-    if lengths.iter().any(|length| *length <= 1.0e-12) {
-        return false;
-    }
-    let tolerance = 1.0e-9;
-    edges[0].dot(edges[1]).abs() <= tolerance * lengths[0] * lengths[1]
-        && edges[0].cross(edges[2]).abs() <= tolerance * lengths[0] * lengths[2]
-        && edges[1].cross(edges[3]).abs() <= tolerance * lengths[1] * lengths[3]
+    rectangle_frame(pline).is_some()
 }
 
 fn properties(pline: &LwPolyline) -> Vec<PropSection> {
@@ -1203,7 +1193,14 @@ impl crate::entities::traits::Grippable for LwPolyline {
             // Vertex grip. Break only where a split is possible: any vertex
             // of a closed polyline, interior vertices of an open one.
             let breakable = n >= 3 && (self.is_closed || (grip_id > 0 && grip_id < n - 1));
-            let mut items = vec![
+            let mut items = Vec::new();
+            if is_rectangle(self) {
+                items.push(GripMenuItem {
+                    label: "Resize",
+                    action: GripMenuAction::RectangleResize,
+                });
+            }
+            items.extend([
                 GripMenuItem {
                     label: "Stretch",
                     action: GripMenuAction::Stretch,
@@ -1216,7 +1213,7 @@ impl crate::entities::traits::Grippable for LwPolyline {
                     label: "Remove Vertex",
                     action: GripMenuAction::RemoveVertex,
                 },
-            ];
+            ]);
             if breakable {
                 items.push(GripMenuItem {
                     label: "Break",
@@ -1242,7 +1239,19 @@ impl crate::entities::traits::Grippable for LwPolyline {
                 action: GripMenuAction::ConvertToArc,
             }
         };
-        vec![
+        let mut items = Vec::new();
+        if is_rectangle(self) && seg < 4 {
+            // Moving an edge changes the dimension perpendicular to it.
+            items.push(GripMenuItem {
+                label: if seg % 2 == 0 { "Height" } else { "Width" },
+                action: if seg % 2 == 0 {
+                    GripMenuAction::RectangleHeight
+                } else {
+                    GripMenuAction::RectangleWidth
+                },
+            });
+        }
+        items.extend([
             GripMenuItem {
                 label: "Stretch",
                 action: GripMenuAction::Stretch,
@@ -1252,7 +1261,93 @@ impl crate::entities::traits::Grippable for LwPolyline {
                 action: GripMenuAction::AddVertex,
             },
             convert,
-        ]
+        ]);
+        items
+    }
+
+    fn grip_menu_value_prompt(
+        &self,
+        grip_id: usize,
+        action: crate::scene::model::object::GripMenuAction,
+    ) -> Option<&'static str> {
+        use crate::scene::model::object::GripMenuAction as A;
+        let n = self.vertices.len();
+        (is_rectangle(self)
+            && n == 4
+            && (n..n + 4).contains(&grip_id)
+            && matches!(action, A::RectangleWidth | A::RectangleHeight))
+        .then_some(match action {
+            A::RectangleWidth => "New width",
+            _ => "New height",
+        })
+    }
+
+    fn grip_menu_point_value(
+        &self,
+        grip_id: usize,
+        action: crate::scene::model::object::GripMenuAction,
+        point: glam::DVec3,
+    ) -> Option<f64> {
+        use crate::scene::model::object::GripMenuAction as A;
+        let (frame, plane) = rectangle_frame(self)?;
+        let seg = grip_id.checked_sub(4)?;
+        if seg >= 4 {
+            return None;
+        }
+        let axis = match (seg % 2, action) {
+            (0, A::RectangleHeight) => Vec2::from(frame.height_axis),
+            (1, A::RectangleWidth) => Vec2::from(frame.width_axis),
+            _ => return None,
+        };
+        let opposite_mid = {
+            let a = self.vertices[(seg + 2) % 4].location;
+            let b = self.vertices[(seg + 3) % 4].location;
+            Vec2::new((a.x + b.x) * 0.5, (a.y + b.y) * 0.5)
+        };
+        let point = Vec2::from(plane.project(point.to_array())?);
+        let value = (point - opposite_mid).dot(axis).abs();
+        (value > Tolerance::default().linear()).then_some(value)
+    }
+
+    fn apply_grip_menu_value(
+        &mut self,
+        grip_id: usize,
+        action: crate::scene::model::object::GripMenuAction,
+        value: f64,
+    ) {
+        use crate::scene::model::object::GripMenuAction as A;
+        if value <= Tolerance::default().linear() {
+            return;
+        }
+        let Some((frame, _)) = rectangle_frame(self) else {
+            return;
+        };
+        let Some(seg) = grip_id.checked_sub(4) else {
+            return;
+        };
+        if seg >= 4 {
+            return;
+        }
+        let axis = match (seg % 2, action) {
+            (0, A::RectangleHeight) => frame.height_axis,
+            (1, A::RectangleWidth) => frame.width_axis,
+            _ => return,
+        };
+        let i0 = seg;
+        let i1 = (seg + 1) % 4;
+        let o0 = (seg + 3) % 4;
+        let o1 = (seg + 2) % 4;
+        let selected_mid = (self.vertices[i0].location + self.vertices[i1].location) * 0.5;
+        let opposite_mid = (self.vertices[o0].location + self.vertices[o1].location) * 0.5;
+        let delta = selected_mid - opposite_mid;
+        let signed_distance = delta.x * axis[0] + delta.y * axis[1];
+        if signed_distance.abs() <= Tolerance::default().linear() {
+            return;
+        }
+        let direction = acadrust::types::Vector2::new(axis[0], axis[1])
+            * signed_distance.signum();
+        self.vertices[i0].location = self.vertices[o0].location + direction * value;
+        self.vertices[i1].location = self.vertices[o1].location + direction * value;
     }
     fn apply_grip_menu(&mut self, grip_id: usize, action: crate::scene::model::object::GripMenuAction) {
         use crate::scene::model::object::GripMenuAction as A;
@@ -1440,9 +1535,10 @@ impl crate::entities::traits::MassPropsCalc for acadrust::entities::LwPolyline {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::entities::traits::PropertyEditable;
+    use crate::entities::traits::{Grippable, PropertyEditable};
+    use crate::scene::model::object::GripMenuAction;
     use acadrust::entities::{LwPolyline, LwVertex};
-    use acadrust::Vector2;
+    use acadrust::{Vector2, Vector3};
 
     fn make_test_lwpolyline(count: usize, constant_width: f64) -> LwPolyline {
         let mut pl = LwPolyline::default();
@@ -1453,6 +1549,71 @@ mod tests {
         pl
     }
 
+    fn make_test_rectangle() -> LwPolyline {
+        let mut pl = LwPolyline::default();
+        pl.is_closed = true;
+        pl.vertices = [(0.0, 0.0), (10.0, 0.0), (10.0, 5.0), (0.0, 5.0)]
+            .into_iter()
+            .map(|(x, y)| LwVertex::new(Vector2::new(x, y)))
+            .collect();
+        pl
+    }
+
+    #[test]
+    fn rectangle_midpoint_offers_dimension_before_stretch() {
+        let pl = make_test_rectangle();
+        let bottom = pl.grip_menu(4);
+        assert_eq!(bottom[0].action, GripMenuAction::RectangleHeight);
+        assert_eq!(bottom[1].action, GripMenuAction::Stretch);
+
+        let right = pl.grip_menu(5);
+        assert_eq!(right[0].action, GripMenuAction::RectangleWidth);
+        assert_eq!(right[1].action, GripMenuAction::Stretch);
+    }
+
+    #[test]
+    fn rectangle_corner_offers_resize_before_stretch() {
+        let pl = make_test_rectangle();
+        let corner = pl.grip_menu(0);
+        assert_eq!(corner[0].action, GripMenuAction::RectangleResize);
+        assert_eq!(corner[1].action, GripMenuAction::Stretch);
+    }
+
+    #[test]
+    fn rectangle_dimension_edit_keeps_opposite_edge_fixed() {
+        let mut pl = make_test_rectangle();
+        pl.apply_grip_menu_value(6, GripMenuAction::RectangleHeight, 8.0);
+        assert_eq!(pl.vertices[0].location, Vector2::new(0.0, 0.0));
+        assert_eq!(pl.vertices[1].location, Vector2::new(10.0, 0.0));
+        assert_eq!(pl.vertices[2].location, Vector2::new(10.0, 8.0));
+        assert_eq!(pl.vertices[3].location, Vector2::new(0.0, 8.0));
+        assert!(is_rectangle(&pl));
+    }
+
+    #[test]
+    fn rectangle_point_preview_reports_full_dimension() {
+        let pl = make_test_rectangle();
+        let value = pl.grip_menu_point_value(
+            5,
+            GripMenuAction::RectangleWidth,
+            glam::DVec3::new(14.0, 2.5, 0.0),
+        );
+        assert_eq!(value, Some(14.0));
+    }
+
+    #[test]
+    fn rectangle_point_preview_uses_entity_plane() {
+        let mut pl = make_test_rectangle();
+        pl.normal = Vector3::new(0.0, 1.0, 0.0);
+        pl.elevation = 5.0;
+        let (_, plane) = rectangle_frame(&pl).expect("rectangle frame");
+        let point = glam::DVec3::from_array(plane.point_at([14.0, 2.5]));
+
+        let value = pl.grip_menu_point_value(5, GripMenuAction::RectangleWidth, point);
+
+        assert_eq!(value, Some(14.0));
+    }
+
     #[test]
     fn test_lwpolyline_uniform_width_shows_global_width() {
         let pl = make_test_lwpolyline(3, 5.0);
diff --git a/src/modules/draw/draw/shapes.rs b/src/modules/draw/draw/shapes.rs
index c73f201a5..bf61c9fff 100644
--- a/src/modules/draw/draw/shapes.rs
+++ b/src/modules/draw/draw/shapes.rs
@@ -272,7 +272,7 @@ fn make_rect_pline(
     style: RectStyle,
 ) -> Option<EntityType> {
     let (geometry, elevation) = rectangle_polyline(corners, plane, style)?;
-    let mut polyline = LwPolyline {
+    let polyline = LwPolyline {
         vertices: geometry
             .vertices
             .iter()
@@ -289,9 +289,6 @@ fn make_rect_pline(
         thickness: style.thickness,
         ..Default::default()
     };
-    let mut marker = acadrust::xdata::ExtendedDataRecord::new("OCS_RECTANGLE");
-    marker.add_value(acadrust::xdata::XDataValue::Integer16(1));
-    polyline.common.extended_data.add_record(marker);
     Some(plane.place_entity(EntityType::LwPolyline(polyline)))
 }
 
diff --git a/src/scene/model/object.rs b/src/scene/model/object.rs
index 5e7367141..8a6079de5 100644
--- a/src/scene/model/object.rs
+++ b/src/scene/model/object.rs
@@ -175,6 +175,9 @@ pub enum GripMenuAction {
     Lengthen,
     Radius,
     ArcLength,
+    RectangleWidth,
+    RectangleHeight,
+    RectangleResize,
     AddVertex,
     RemoveVertex,
     ConvertToArc,
diff --git a/src/scene/pick/grip.rs b/src/scene/pick/grip.rs
index 135122a04..f8f76e080 100644
--- a/src/scene/pick/grip.rs
+++ b/src/scene/pick/grip.rs
@@ -48,6 +48,8 @@ pub struct GripEdit {
     pub axis: Option<DVec3>,
     /// Every hot grip moved by this edit. A normal grip edit contains one target.
     pub targets: Vec<GripTarget>,
+    /// Opposite corner and local width/height axes for rectangle corner resize.
+    pub rectangle_frame: Option<(DVec3, DVec3, DVec3)>,
 }
 
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
@@ -56,6 +58,9 @@ pub enum GripEditMode {
     Lengthen,
     Radius,
     ArcLength,
+    RectangleWidth,
+    RectangleHeight,
+    RectangleResize,
 }
 
 #[derive(Clone, Debug)]
@@ -86,6 +91,7 @@ impl GripEdit {
                 is_translate,
                 last_world: world,
             }],
+            rectangle_frame: None,
         }
     }
 
@@ -106,6 +112,32 @@ impl GripEdit {
         edit.mode = GripEditMode::ArcLength;
         edit
     }
+
+    pub fn rectangle_width(handle: Handle, grip_id: usize, world: DVec3) -> Self {
+        let mut edit = Self::single(handle, grip_id, false, world);
+        edit.mode = GripEditMode::RectangleWidth;
+        edit
+    }
+
+    pub fn rectangle_height(handle: Handle, grip_id: usize, world: DVec3) -> Self {
+        let mut edit = Self::single(handle, grip_id, false, world);
+        edit.mode = GripEditMode::RectangleHeight;
+        edit
+    }
+
+    pub fn rectangle_resize(
+        handle: Handle,
+        grip_id: usize,
+        world: DVec3,
+        opposite: DVec3,
+        width_axis: DVec3,
+        height_axis: DVec3,
+    ) -> Self {
+        let mut edit = Self::single(handle, grip_id, false, world);
+        edit.mode = GripEditMode::RectangleResize;
+        edit.rectangle_frame = Some((opposite, width_axis, height_axis));
+        edit
+    }
 }
 
 // ── Screen-space helpers ───────────────────────────────────────────────────
diff --git a/src/ui/overlay.rs b/src/ui/overlay.rs
index 113057a8d..05e88b46a 100644
--- a/src/ui/overlay.rs
+++ b/src/ui/overlay.rs
@@ -2685,6 +2685,8 @@ pub struct DynBox {
     /// User has typed a value (the box no longer tracks the cursor).
     pub locked: bool,
     pub role: DynRole,
+    /// Optional exact viewport position, used by rotated rectangle dimensions.
+    pub center: Option<Point>,
 }
 
 pub fn dynamic_input_overlay<'a>(
@@ -3038,7 +3040,7 @@ impl DynInputCanvas {
 
         // ── Box placement by role ──
         for b in &self.boxes {
-            let center = match b.role {
+            let center = b.center.unwrap_or_else(|| match b.role {
                 DynRole::Angle => self.label_screen.unwrap_or_else(|| {
                     let a_mid = a_ref + sweep * 0.5;
                     let r = (len - DYN_BOX_H * 2.0).max(len * 0.5);
@@ -3049,10 +3051,18 @@ impl DynInputCanvas {
                 }),
                 DynRole::X | DynRole::Width => Point {
                     x: (base.x + cursor.x) * 0.5,
-                    y: base.y + 14.0,
+                    y: if self.guide == DynGuide::RectSides {
+                        base.y - (cursor.y - base.y).signum() * 14.0
+                    } else {
+                        base.y + 14.0
+                    },
                 },
                 DynRole::Y | DynRole::Height => Point {
-                    x: corner.x + 18.0,
+                    x: if self.guide == DynGuide::RectSides {
+                        corner.x + (cursor.x - base.x).signum() * 18.0
+                    } else {
+                        corner.x + 18.0
+                    },
                     y: (base.y + cursor.y) * 0.5,
                 },
                 // Perpendicular measure: on the measured segment / dim line.
@@ -3071,7 +3081,7 @@ impl DynInputCanvas {
                     x: base.x + dx * len * 0.5 + nx * 16.0,
                     y: base.y + dy * len * 0.5 + ny * 16.0,
                 },
-            };
+            });
             Self::draw_box(frame, b, center, bounds, theme);
         }
         // Keep the tracking hint near the crosshair in guided layouts.