quadrilateral apsects

Parallelogram

Opposite sides are parallel and congruent; Opposite angles are congruent; Consecutive angles are supplementary; Diagonals bisect each other; Sum of interior angles is 360°

Rectangle

All properties of a parallelogram; All angles are right angles (90°); Diagonals are congruent

Rhombus

All properties of a parallelogram; All sides are congruent; Diagonals are perpendicular; Diagonals bisect opposite angles

Square

All properties of a rectangle and rhombus; All sides are congruent; All angles are right angles (90°); Diagonals are congruent, perpendicular, and bisect opposite angles

Trapezoid

Only one pair of opposite sides are parallel (bases); Sum of interior angles is 360°

Isosceles Trapezoid

All properties of a trapezoid; Non-parallel sides (legs) are congruent; Base angles are congruent; Diagonals are congruent

Kite

Two pairs of adjacent sides are congruent; One pair of opposite angles are congruent; Diagonals are perpendicular; One diagonal bisects the other; One diagonal bisects a pair of opposite angles