Parallelogram

• Opposite sides are parallel.

• Opposite sides are congruent.

• Opposite angles are congruent.

• Consecutive angles are supplementary.

• Diagonals bisect each other.

Rectangles

• Has all properties of a parallelogram.

• Four right angles.

• Diagonals are congruent.

Rhombi

• Has all properties of a parallelogram.

• Four congruent sides.

• Diagonals are perpendicular.

• Diagonals bisect opposite angles.

Squares

• Has all properties of a parallelograms, rectangles and rhombi.

Trapezoids

• Only ONE pair of opposite sides are parallel. (They are called bases.)

• Consecutive angles are supplementary.

• Midsegment of Trapezoid: a segment that connects the midpoints of the legs.

Kites

• 2 pairs of consecutive congruent sides.

• One pair of opposite angles are congruent.

• Diagonals are perpendicular.

Exterior Angle Theorem

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Interior Angle Sum Theorem

​**(n = # of sides)