Angles and PolygonsQuadrilaterals
A
Move the vertices of this quadrilateral and observe how the sides and angles change:
There are several special types of quadrilaterals, each with their own properties:
Rectangle
Square
Parallelogram
Rhombus
Trapezium
Rectangle
- All angles are
° (right angles) - Opposite sides are
- Diagonals are
Quadrilateral Properties Summary
| Shape | Parallel Sides | Equal Sides | Right Angles | Equal Diagonals |
|---|---|---|---|---|
| Rectangle | 2 pairs | Opposite | All 4 | Yes |
| Square | 2 pairs | All 4 | All 4 | Yes |
| Parallelogram | 2 pairs | Opposite | None | No |
| Rhombus | 2 pairs | All 4 | None | Perpendicular |
| Trapezium | 1 pair | None | None | No |
Notice that a square is a special type of rectangle, and a rhombus is a special type of parallelogram. Every square is a rectangle, but not every rectangle is a square!