GE.F.1Parallelograms01/04
Properties of parallelograms.
Step01of 04
A parallelogram is a quadrilateral with both pairs of opposite sides parallel. From that single definition, FIVE properties follow.
| Opposite sides | →parallel AND congruent |
| Opposite angles | →congruent |
| Consecutive angles | →supplementary (sum to 180°) |
| Diagonals | →BISECT each other |
| Each diagonal | →divides the parallelogram into two congruent triangles |