Name Class Date Standardized Test Prep
Similar Polygons
Multiple Choice
For Exercises 1–5, choose the correct letter.
1. You make a scale drawing of a tree using the scale 5 in. = 27 ft. If the tree is
67.5 ft tall, how tall is the scale drawing?
10 in.
11.5 in.
12 in.
12.5 in.
2. You make a scale drawing of a garden plot using the scale 2 in. = 17 ft. If the
length of a row of vegetables on the drawing is 3 in., how long is the actual row?
17 ft
25.5 ft
34 ft
42.5 ft
3. The scale factor of △RST to △DEC is 3 ∶ 13. What is the scale factor of △DEC
to △RST ?
3 ∶ 13
1 ∶ 39
39 ∶ 1
13 ∶ 3
4. △ACB ∼ △FED. What is the value of x?
22.5
E
D
A
x ! 4.4 23.5
B
9
C
F
4
4.2
4.5
5
5. MNOP ∼ QRST with a scale factor of 5 ∶ 4. MP = 85 mm. What is the
value of QT?
60 mm
68 mm
84 mm
106.25 mm
Short Response
6. Are the triangles at the right similar? Explain. A
Y
30
C
33.5
15
50.25
B X
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45
22.5
Z