Maths Dictionary · JSS 1
Quadrilateral
Simple meaning
A polygon with four sides. Its angles add up to 360°.
Example
Squares, rectangles, trapeziums and kites.
See it
From the Plane Shapes lesson. Try moving things around.
Rectangle · a quadrilateral
- Sides
- 4
- Right angles
- 4
- Parallel pairs
- 2
- Lines of symmetry
- 2
- Regular?
- No
- Angle sum
- 360°
- (4 − 2) × 180° = 360°
Tick marks show equal sides; arrows show parallel sides.