Top Ten Properties of a Parallelogram

1. A parallelogram is a quadrilateral.

2. The opposite sides of a parallelogram are parallel.

3. The opposite angles of a parallelogram are congruent.

4. The opposite sides of a parallelogram are congruent.

5. The perimeter of a parallelogram equals 2 (base + side)

6. The area of a parallelogram equals base * height

7. The adjacent angles of a parallelogram are supplemental.

8. The diagonals of a parallelogram bisect each other. (In other words the cut each other exactly in half.

9. A parallelogram has four sides

10. The sides of a parallelogram must be straight.