1. Similar and Congruent Figures Lesson 9-7

2. Figures that have the same size and shape are congruent figures These triangles have the same size and shape so they are congruent. This triangle is also congruent even though its position has changed.

3. Figures that have the same shape but not necessarily the same size are similar figures. These parallelograms have the same shape but not the same size so they are similar.

4. Figures that have the same classification are not always congruent or similar figures. These rectangles are neither the same size nor the same shape, so they are neither similar nor congruent.

5. Corresponding sides represent the same side of similar figures. Rectangle ABCD and rectangle WXYZ are similar shapes, So, side DC corresponds to side ZY.

6. Guided practice…. Tell whether each pair of figures is congruent, similar, or neither.

7. For Exercises 4 and 5, refer to the similar parallelograms below 4. What side of parallelogram HIJK corresponds to side QR? 5. What side or parallelogram PQRS corresponds to side HK?

8. Lesson Check…. Tell whether each pair of figures is congruent, similar, or neither. 1. 2.

9. Tell whether each pair of figures is congruent, similar, or neither. 3. 4.

10. 5. What side of triangle ABC corresponds to QR? 6. What side of triangle ABC corresponds to PQ?