Rectangle – a parallelogram with four right angles
The rectangle, like the square, is one of the most commonly known quadrilaterals. It is defined as having all four interior angles 90° (right angles).

Things I know about a rectangle
- 1. 4 sides and 4 angles
- 2. the sum of the interior angles is 360 and the sum of the exterior angles is 360
- 3. opposite sides are parallel
- 4. opposite sides are congruent
- 5. opposite angles are congruent
- 6. consecutive angles are supplementary
- 7. diagonals bisect each other
- 8. a single diagonal will divide a rectangle into two congruent triangles
- 9. four right angles or all angles are congruent
- 10. diagonals are congruent
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Pretty. Geometric Art. Who knew? Me.

