1. Similar Figures

2. SIMILAR TRIANGLES
Similar figures have the same shape, but are a different size.

3. SIMILAR TRIANGLES
Corresponding sides of similar figures are proportional.
4"
2"
3"
6"

4. SIMILAR TRIANGLES
Using proportions, we can find the lengths of missing sides of similar figures.
12"
6"
4" ?

5. SIMILAR TRIANGLES
12"
6"
4" x 6 12 = 4 x

6. SIMILAR TRIANGLES
12"
6"
4" x 6 12
x = 48÷6 = 8" = 4 x

7. SIMILAR TRIANGLES
12"
6"
4" ? 6 4 = 12 x

8. SIMILAR TRIANGLES
12"
6"
4" x 6 4
x = 48÷6 = 8" = 12 x

9. SIMILAR RECTANGLES
7" x
4" x
7.5"

10. SIMILAR RECTANGLES
7" x
4" x
7.5" 7 x = 4
7.5

11. SIMILAR RECTANGLES
7" x
4" x
7.5" 7 x =
x = " 4
7.5

12. SIMILAR RECTANGLES
7" x
4" x
7.5" 7 4 = x
7.5

13. SIMILAR RECTANGLES
7" x
4" x
7.5" 7 4 =
x = " x
7.5

14. SIMILAR RECTANGLES
7"
5"
8" x

15. SIMILAR RECTANGLES
7"
5"
8" x 5 8 = 7 x

16. SIMILAR RECTANGLES
7"
5"
8" x 5 8 =
x = 11.2" 7 x

17. SIMILAR RECTANGLES
7"
5"
8" x 5 7 = 8 x

18. SIMILAR RECTANGLES
7"
5"
8" x 5 7 =
x = 11.2" 8 x