Parallelogram: Opposite sides parallel, opposite sides congruent, opposite angles congruent, diagonals bisect , Rectangle: all properties of paralellograms 1, all angles are right angles, the diagonals are congruent , Rhombus: all properties of paralellograms 2, All sides are congruent , diagonals are perpendicular, diagonals bisect the opposite angles, Square : all properties of paralellograms 3, all sides are congruent 2, all angles are right angles 2, diagonals are congruent 2, diagonals are perpendicular 2, diagonals bisect opposite angles 2,

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