1. Indirect Measurement
Lesson 4-7

2. Indirect measurement – using the properties of similar polygons and proportions.26 13 x 5 12 24

3. Example 1
Find the distance across Otter Lake.

4. Example 1
Find the distance across Otter Lake.
12.5

5. Example 2

6. Example 2
2.16

7. Example 3

8. Example 3
45 miles

9. Example 4

10. Example 4
1250 ft.

11. Example 5
At noon, at tree casts a shadow of 102 ft. If , at the same time, a 60 in. tall 8th grader casts at shadow of 6ft, how tall is the tree in feet? x
60 in.
102 ft.
6 ft.

12. Example 5
At noon, at tree casts a shadow of 102 ft. If , at the same time, a 60 in. tall 8th grader casts at shadow of 6ft, how tall is the tree in feet? x
60 in.
102 ft.
6 ft.
85 ft.