Parallelogram- both pairs of oppisite sides are congruent
- both pairs of oppisite angles are congruent
Rectangles- 4 right angles
- diagonals are congruent
Rhombus- parellelogram with 4 congruent sides
- diagonals are perpendicular
- pair of oppisite angles
Square- all sides are congruent
- angles are are congruent
- diagonals intersect at 90 degrees
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