Rectangles

Definition of a rectangle

A rectangle is a quadrilateral in which all angles are right angles.

Properties of a rectangle

• A rectangle is a parallelogram, so its opposite sides are equal.
• The diagonals of a rectangle are equal and bisect each other.

Tests for a rectangle

• A parallelogram with one right angle is a rectangle.
• A quadrilateral whose diagonals are equal and bisect each other is a rectangle.