1. 8.2 Parallelograms

2. What do you know about parallelograms?

3. What do you think you know about parallelograms?

4. What would you like to know about parallelograms?

5. The Definition:
A parallelogram is a quadrilateral whose opposite sides are parallel

6. Properties (Theorems)
8.3: Opposite sides are congruent
8.4: Opposite angles are congruent
8.5: Consecutive angles are supplementary

7. Properties (Theorems)
8.6: If one angle is right, all angles are right angles
8.7: The diagonals bisect each other (NOT NECESSARILY CONGRUENT!!!)

8. Time For Fun (Problems)

9. Theorem 8.8: Let’s prove it!
Each diagonal of a parallelogram separates the parallelogram into 2 congruent triangles