LEVEL+ZERO+CCSL

Parallelogram **Definition** A quadrilateral in which two opposite sides are parallel.  **Important Property** Opposite sides are parallel   **Why this property?** **Two ** pairs of parallel sides distinguish a parallelogram from trapezoid, which has exactly one pair of and a random quadrilateral such as kite. Kite does not have a parallel side.   **Facts** Diagonals are angle bisectors Diagonals are bisect each other Opposite sides are parallel (two pairs) Opposite sides are equal in length Consecutive angles are supplementary