Rectangle

//**Rectangle**// is a quadrilateral with opposite sides that are congruent and parallel
 * __Definition__ **

//Angle Properties// ** **1.** *Every angle is a right angle **Example Proof** Prove: All angles of a rectangle are right angles
 * __Properties__ **

This is the most important property of a rectangle for the following reasons: - Knowing these angles to be 90 degrees, congruence of opposite triangles formed by diagonals can be proved using right triangle shortcuts


 * //Diagonal Properties// **
 * 1. ** Diagonals are congruent

AR is congruent to AC (8.95 cm = 8.95 cm) RC bisects ET
 * 2. ** Diagonals bisect each other

AE is congruent to AT (8.95 cm = 8.95 cm) ET bisects RC

**Example Proof** Prove: Triangle RAT is congruent to Triangle CAE
 * 3. ** Opposite triangles formed by diagonals are congruent