Parallelogram-
•Opposite sides are congruent (AB = DC).
•Opposite angels are congruent (D = B).
•Consecutive angles are supplementary (A + •D = 180°).
•If one angle is right, then all angles are right.
•The diagonals of a parallelogram bisect each other.
•Each diagonal of a parallelogram separates it into two congruent triangles.
