Page 124 - Math Course 3 (Book 2)

Similarity of Polygons

Your Turn!

Proportional Parts and Scale Factor
The two polygons are similar. Write a similarity T 2 R
statement.
Z b – 6 O
A. TRAP ~ OZDL
B. TRAP ~ OLDZ
C. TRAP ~ ZDLO
D. TRAP ~ ZOLD 4 a

Answer
P 5 A D 3 L
The two polygons are similar. Solve for a. The two polygons are similar. Solve for ZO.

A. a = 1.4
B. a = 3.75 A. 7.2
C. a = 2.4 B. 1.2
D. a = 2 C. 2.4
D. 28
3
Answer Answer
The two polygons are similar. Solve for b. The two polygons are similar. What is the scale
factor of polygon TRAP to polygon ZOLD?
A. b = 7.2 A. 2 B. 3
4
3
B. b = 1.2
C. b = 28 C. 5 D. 3
3
D. b = 7.2 3 5

Answer Answer

Enlargement or Reductions of a Figure Scales on Maps
Quadrilateral GCDE is similar to quadrilateral JKLM An historic train ride is planned between two
7
with a scale factor of . If two of the sides of landmarks on the Lewis and Clark Trail. The scale
5
on a map that includes the two landmarks is 3
GCDE measure 7 inches and 14 inches, what are centimeters = 125 miles. The distance between the
the lengths of the corresponding sides of JKLM? two landmarks on the map is 1.5 centimeters. If
the train travels at an average rate of 50 miles per
hour, how long will the trip between the landmarks
A. 9.8 in, 19.6 in take?
B. 7 in, 14 in
C. 6 in, 12 in A. 3.75 hr
B. 1.25 hr
D. 5 in, 10 in C. 5 hr
D. 2.5 hr

Answer Answer

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