Additional Resources
6
Assessment Book
Solve the proportion.
y25
5
2. }
5 } 20
9
6
1. }
5}
16
Chapter Test, Levels A, B, C
• Standardized Chapter Test
• SAT/ACT Chapter Test
• Alternative Assessment
•
24
x
4
3
2 2b
3. 3}
5}
2}3
12
2
4
1
7
4. }
5}
3
a21
2a 1 8
2
In Exercises 5–7, use the diagram where n PQR , n ABC.
5. List all pairs of congruent angles.
 P and  A,  Q and  B,  R and  C
6. Write the ratios of the corresponding sides in a
Test Generator
B
P
20
C
21
12
20 10
x
statement of proportionality. }
5}
5}
21 24 12
7. Find the value of x. 17.5
Chapter Test
Easily-readable reduced copies (with answers) of Chapter
Test B, the Standardized
Chapter Test, and the
Alternative Assessment from
the Assessment Book can be
found on pp. 354G–354H.
CHAPTER TEST
10
x
R
P
24
A
Determine whether the triangles are similar. If so, write a similarity
statement and the postulate or theorem that justifies your answer.
9. similar;
nDEC , nDAB,
AA Similarity
Postulate
8. N
10. similar;
nNKJ , nNML,
SAS Similarity
Theorem
M
15
X
30
20
Y
11
18
10.
B
L
M
6
C
N
27
858
Z
L
25
9.
628
A
not similar
338
9
18
K
E
J
D
In Exercises 11–13, find the length of }
AB.
11. B
C
D
9
12.
D
35
E
B
30
10
E
A
8
A
13.
21 F
16.2
C
40
B
D
52
A
20 C
78
24
Determine whether the dilation from Figure A to Figure B is a reduction
or an enlargement. Then find its scale factor.
14.
15.
y
y
A
1
B
1
B
9 x
A
1
x
enlargement; }5
reduction; }1
2
16. SCALE MODEL You are making a scale model of your
2
school’s baseball diamond as part of an art project.
The distance between two consecutive bases is
1
90 feet. If you use a scale factor of }
to build your
180
model, what will be the distance around the bases
on your model? 2 ft
422
Chapter 6 Similarity
lage11se-0680.indd 422
422
lage11se6/19/09
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