Math Connects Course 3: 8-1D Indirect Measurement Answer Guide
3. 200 feet
4. 21 feet
5. 37.5 meters
6. 6 meters
7. 4.2 feet
1
8. 103 3 meters
9.
136
10.
34
6.5
4.5
=
ℎ
; 6 feet tall
1.5
ℎ
= 48; about 69 feet
11. Sample answer: At the same time a
baby giraffe casts a 3.2-foot shadow, a
15-foot adult giraffe casts an 8-foot
shadow. How tall is the baby giraffe?
𝑥
15
Solving the proportion 3.2 = 8 gives a
height of 6 feet for the baby giraffe.
12.
1
4
30
𝑥
= 240,000; 2,000 miles
13. Sample answer: The length of the tall
object’s shadow, the length of the
shadow of a nearby object with a height
that is directly measurable, and the
height of the nearby object.
14. B
15. H
16. Yes; The corresponding angles are
5
4
congruent and 10 = 8.
17. No; The corresponding angles are
3 5
not congruent and 5 ≠ 9.
18. 20 combinations