1. 8.5 Proving Triangles are Similar Objectives: Use similarity theorems to prove that 2 triangles are similar Use similar triangles to solve real problems

4. Which of these are similar? 12 6 9 8 6 4 10 6 14

5. Match the sides . . . 12 6 9 8 6 4 10 6 14 Purple Blue Orange Shortest Side: 4 6 6 Middle Side: 6 9 10 Longest Side: 8 12 10

6. Do the ratios 12 6 9 8 6 4 10 6 14 Purple Blue Orange P/B B/O Shortest Side: 4 6 6 4:6 6:6 Middle Side: 6 9 10 6:9 9:10 Longest Side: 8 12 10 8:12 12:10

7. Reduce the ratios . . . 12 6 9 8 6 4 10 6 14 Purple Blue Orange P/B B/O Shortest Side: 4 6 6 4:6 2:3 6:6 1:1 Middle Side: 6 9 10 6:9 2:3 9:10 9:10 Longest Side: 8 12 14 8:12 2:3 12:14 6:7