CHAPTER
NAME _________________________________________________________ DATE ____________
9
Chapter Test C For use after Chapter 9
Complete and solve the proportion. 1.
x ? 7 3
2.
1. a.
? 3 x 8
x 10 10 ?
3.
3
b. 2. a. 2x
x
b. x
10
7
3.
x
3 8
Find the unknown side length. Simplify answers that are radicals. Tell whether the side lengths form a Pythagorean triple. 4.
5.
;
5.
;
6.
;
7. 8.
6.
9.
x x
1
4.
10.
27.5
x
10.5
17.5
11.
3
12.
22
13.
Decide whether the numbers can represent the side lengths of a triangle. If they can, classify the triangle as right, acute, or obtuse. 7. 6, 8, 10
8. 2, 6, 5
10. 0.27, 0.36, 0.45
14. 15.
9. 1, 2, 8
11. 2.5, 1.5, 4
12. 12, 16, 20
Find the value of each variable. Write answers in simplest radical form. 13.
14.
15. x
Review and Assess
5
y
y
x
30 x
10
y
60
45 5
116
Geometry Chapter 9 Resource Book
Copyright © McDougal Littell Inc. All rights reserved.
CHAPTER
NAME _________________________________________________________ DATE ____________
9
Chapter Test C
CONTINUED
For use after Chapter 9
Find the sine, the cosine, and the tangent of the acute angle A of the triangle. Express each value as a decimal rounded to four places. 16.
17.
C
b. c.
18. 0.36
A
C
15
9
16. a.
A
17. a. b.
10
0.27
0.45
18
B
20.6
c. C
B
A
12
B
18. a. b.
Use trigonometric ratios to find the value of each variable. Round decimals to the nearest tenth. 19.
20.
19.
x
3.5
c.
20. 8.2
29
21.
43 x
22.
\
Draw vector PQ in a coordinate plane. Write the component form of the vector and find its magnitude. Round decimals to the nearest tenth. 21. P0, 0, Q3, 8
y
23.
24.
22. P3, 5, Q5, 3 23. P2, 9, Q3, 5
25.
24. P2, 6, Q1, 5
x
26. 27. 28. \
>
<
\
<
>
\
<
>
29. Review and Assess
<
Let u 0.5, 2.75 , v 3, 7 , w 2.25, 5 , and
30.
>
z 4, 3 . Find the given sum. \
25. v w
26. u z
27. v z
28. w z
29. u v
30. u w
\
\
\
\
\
\
Copyright © McDougal Littell Inc. All rights reserved.
\
\
\
\
\
\
Geometry Chapter 9 Resource Book
117
