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Parallelogram

Opposite sides are parallel, opposite sides are congruent, opp angles are congruent, diagnols bisect each other, consecutive angeles are supplementary

Rhombus

all sides are congruent, al properties of parallelogram, diagnols are perpendicular, diagnols bisect each angle

Rectangle

all angles are 90 all properties of a parallelogram, diagnols are congruent

Square

all properties of a parallelogram, all properties of a rectangle, all properties of a rhombus

trapezoid

1 pair of opposite sides are parallel, median has parallel bases, med=b+b/2

Isosceles trapezoid

all properties of trapezoid, legs are congruent, base angles are congruent, diagnols are congruent