Properties of Quadrilaterals

Parallelogram

- Opposite sides are congruent

- Opposite angles are congruent

- Opposite sides are parallel

- Consecutive sides are supplementary

- Diagonals bisect each other

Rectangle

- Big 5

- 4 right angles

- Diagonals are congruent

Rhombus

- Big 5

- All sides are congruent

- Diagonals are perpendicular

- Diagonals bisect opposite angles

Square

- Big 5

- rectangle with two consecutive sides

- all sides are congruent

- diagonals are congruent and perpendicular

- diagonals bisect the angles

- 4 right angles

Trapezoid

- only two sides parallel

- Parallel sides: bases

- Non- Parallel sides: legs

Isosceles Trapezoid

- legs are congruent

- base angles are congruent

- diagonals are congruent

- midsegment is parallel to bases

- length of midsegment is 1/2 of the sum of the bases

- parallel interior angles are supplementary

Right Trapezoid

- one leg is perpendicular to the bases

Kite

- 2 pairs of consecutive sides congruent and no opposite sides

- diagonals are perpendicular