Drag any of the four vertices and watch sides, angles, diagonals, perimeter, and area update in real time. The tool classifies the shape — square, rectangle, rhombus, parallelogram, trapezoid, kite — as you go.
What you'll be able to do
- Demonstrate quadrilateral classification interactively
- Show how angle and side measurements relate
- Reset to preset shapes for a clean start
Step by step
- 1
Open the tool
Sidebar → Teaching tools → Quadrilateral.
- 2
Pick a starting shape
Square, rectangle, rhombus, parallelogram, trapezoid, kite — any of the buttons sets the four vertices for you.
- 3
Drag a vertex
Watch the side lengths, interior angles, diagonals, perimeter, and area update as you drag. The tool re-classifies the shape on every drag.
- 4
Toggle layers
Hide / show angles, sides, or diagonals to focus the class on one property at a time.