Post on 17-Jan-2016
Lesson 4-7
Indirect measurement – using the properties of similar polygons and proportions.
5
12
1326
24
x
Example 1Find the distance across Otter Lake.
Example 1Find the distance across Otter Lake.
12.5
Example 2
Example 2
2.16
Example 3
Example 3
45 miles
Example 4
Example 4
1250 ft.
Example 5
102 ft.
x
60 in.
6 ft.
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?
Example 5
102 ft.
x
60 in.
6 ft.
85 ft.
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?