Parallelogram

A parallelogram is a geometric figure that lies in the plane. Its properties include:

• Opposite sides are parallel

• Opposite sides are congruent

• Opposite angles are congruent

• Consecutive angles are supplementary

• Diagonals bisect each other

• Each diagonal divides the figure into 2 sets congruent triangles

• Both diagonals together divide the figure into 2 pairs of 2 congruent triangles. All 4 triangles have equal area.

Common Parallelograms

• Rectangle

• Square

• Rhombus