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Midzak
Acc. Geometry
Name: ________________________
Period/Date: ___________________
Review, Sections 7.1-7.3
Ratios, Proportions, Similar Polygons
Express each ratio in simplest form.
20
2m
1.
2.
45
7 mn
4.
x 5
3( x  5)
7. 9 :15
Complete each statement.
a 4
10. If  , then 7a  ?
6 7
13. If 5: x  9: 3 , then 9x  ?
Find the value of x.
x 3

16.
20 5
5.
2(a  7)
6a  42
8. 60cm : 2m
15n 2
3.
40n
6.
8cm
2m
9.
4ab
b2
11. If
b d
e
 , then  ?
c e
d
12. If
x
x c
 , then  ?
c
7 9
14. If
a b
a 8
 , then
?
8 12
8
15. If
x3
x 3
 , then
?
9
5 4
17.
7 3x

2 5
18.
x2 1

3
4
19.
x4 1

x4 3
20.
4
3

2x  5 x  7
21.
x
x5

x2
x
22.
x 9

8 12
23.
x2 x6

2
4
24.
x
12

5 x 8
25. The measures of two supplementary angles are in the ratio of 5:13. Find the measure of each angle.
26. If
ABC ~ RST , mA  45 and mC  60 , then mR  ____, mT  _____, mS  ______ .
MNOP~ M’N’O’P’
O
N
18
x O’
28
P
N’
27
M
24
y
15
27. The scale factor of MNOP to
M’N’O’P’ is _________.
28. The value of x= __________
M’
z
P’
29. The value of y = ___________
30. The value of z = __________.
The quadrilaterals shown are similar.
8
6
10
31. The scale factor of the smaller
quadrilateral to the larger
quadrilateral is _________.
z
32. x = __________
y
x
18
9
33. y = __________
34. z = ____________.
35. The measures of the angles of a hexagon are in the ratio 5:5:5:6:7:8. Find the measures.
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