1. A plane figure with 4 sides and 4 angles
8.6 Quadrilaterals
A plane figure with 4 sides and 4 angles

2. Parallelogram Opposite sides are parallel and congruent.
Opposite angles are congruent.

3. Rectangle Parallelogram with 4 right angles.
Opposite sides are parallel and congruent.

4. Rhombus Parallelogram with 4 congruent sides.
Opposite angles are congruent.

5. Square Rectangle with 4 congruent sides.
Rhombus where all angles are right angles.

6. Trapezoid Quadrilateral with exactly 2 parallel sides.
May have 2 right angles.

7. Quadrilateral Venn Diagram