Quadrilaterals

1. Parallelogram

1.1. - Four sided figure, two pairs of parallel sides, opposite angles are equal, opposite sides are equal

1.2. Rectangle

1.2.1. -Four sided figure, opposite sides are parallel, all four angles are right angles

1.2.2. Square

1.2.2.1. -Four sided figure, all sides are equal in length, all four angles are right angles

2. Trapezoid

2.1. -Four sided figure, one pair of parallel sides

2.2. Isosceles Trapezoid

2.2.1. -Four sided figure, opposite sides are parallel, two base angles are congruent, two upper angles are congruent.

3. Kite

3.1. - Four sided figure, two pairs of adjacent congruent sides, diagonals are perpendicular, one pair of opposite congruent angles

3.2. Rhombus

3.2.1. - Four sided figure, opposite sides are parallel, four angles, opposite angles are congruent