1. Chapter 6
Quadrilaterals

2. Section 3 Showing Quadrilaterals are Parallelograms

4. Example 1: Use Opposite Sides Tell whether the quadrilateral is a parallelogram. Explain your reasoning.

5. Example 2: Use Opposite Angles Tell whether the quadrilateral is a parallelogram. Explain your reasoning.

6. Checkpoint: Use Opposite Sides and Opposite Angles Tell whether the quadrilateral is a parallelogram. Explain your reasoning.

8. Example 3: Use Consecutive Angles Tell whether the quadrilateral is a parallelogram. Explain your reasoning.

10. Example 4: Use Diagonals Tell whether the quadrilateral is a parallelogram. Explain your reasoning.

11. Checkpoint: Use Consecutive Angles and Diagonals Tell whether the quadrilateral is a parallelogram. Explain your reasoning.

13. EXIT SLIP