7. QUADRILATERALS PARALLELOGRAM Both pairs of opposite sides are parallel TRAPEZOIDS Only one pair of Opposite sides parallel ISOSCLES TRAPEZOID A trapezoid that has two equal sides ROMBUS 4 equal sides RECTANGLE 4 right angles SQUARE Both a rhombus and a rectangle
8. Properties of Parallelograms Diagonals are perpendicular to each other Diagonals bisect their angles Diagonals are congruent to each other Diagonals bisect each other Opposite sides are congruent Opposite angles are congruent Diagonals bisect each other Consecutive angles are supplementary Diagonals form two congruent triangles