8-3 Tests for Parallelograms
Parallelogram: • a quadrilateral (4 sides) • opposite sides are parallel. • opposite angles are congruent • consecutive angles are supplementary • opposite sides are congruent
4
1 3
2
ALSO: • The diagonals of a parallelogram BISECT each other!
Parallelogram: • opposite sides are parallel • opposite angles are congruent • opposite sides are congruent • diagonals bisect each other • one pair of opposite sides are parallel and congruent.
If you see any QUADRILATERAL …and ANY of the things above are true ………then you are dealing with a PARALLELOGRAM
• that’s it.