1. SIMILAR AND CONGRUENT POLYGONS LESSON 35POWER UP GPAGE 229

2. CONGRUENT POLYGONS Corresponding angles which are the same measure and corresponding sides which are the same length

3. SIMILAR POLYGONS Corresponding angles which are the same measure and corresponding sides which are proportional in length.

4. SIMILAR POLYGONS Which two rectangles are similar? 2 4 6 7 8 6 5 10

5. SIDE – SIDE – SIDE TRIANGLE SIMILARITY If two triangles have proportional corresponding side lengths, then the triangles are similar. 6 8 4 24 1812

6. ANGLE – ANGLE – ANGLE SIMILARITY If the angles of one triangle are congruent to the angles of another triangle, then the triangles are similar and their corresponding side lengths are proportional. 35 ⁰ 40 ⁰ 105 ⁰ 35 ⁰ 40 ⁰ 105 ⁰

7. SCALE FACTOR

8. Find the missing side. What is the scale factor? 8 55 7 16 10 x