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Worksheets

Similar Triangles

Total questions: 20

Worksheet time: 48mins

Name
Class
Date
1.
Are the triangles similar?
a)
Yes
b)
No
2.
Are the triangles similar?
a)
Yes
b)
No
3.
Are the triangles similar?
a)
Yes
b)
No
4.
The triangles are similar, solve for the question mark.
a)
8
b)
12.5
c)
18
d)
24
5.
Complete each proportion.
AB / BM  =  ? / CD
a)
BC
b)
AC
c)
MD
d)
MC
6.
Solve for X.
a)
2 ft
b)
3 ft
c)
4 ft
d)
6 ft
7.
Are the following similar? Why or why not?
a)
Yes
b)
No, the corresponding angles are not equal.
c)
No, the ratios of the corresponding sides are not equal.
8.
Solve for f.
a)
6
b)
4
c)
3
d)
8
9.
Determine if the triangles are similar. Justify.
a)
Yes, SAS.
b)
Yes, AA.
c)
Yes, SSS.
d)
No, not similar.
10.
A photo is 12 in. wide by 18 in. tall. If the width is scaled down to 9 inches, how tall should the similar photo be? 
a)
15 in
b)
0.67
c)
13.5 in
d)
2
11.
How many sides does a Triangle have?
a)
4
b)
3
c)
2
d)
6
12.

State if the polygons are similar.

a)

a

b)

b

c)

c

d)

d

13.

State if the polygons are similar.

a)

a

b)

b

c)

c

d)

d

14.

State if the polygons are similar.

a)

a

b)

b

c)

c

d)

d

15.

State if the polygons are similar.

a)

a

b)

b

c)

c

d)

d

16.

The polygons in each pair are similar. Find the scale factor of the smaller figure to the larger

figure.

a)

a

b)

b

c)

c

d)

d

17.
Find the value of x:
a)
58.3
b)
1.7
c)
21
d)
18
18.

What is the similarity statement for the triangle pair?

a)

ΔXYZ~ΔNEW

b)

ΔXZY~ΔNWE

c)

ΔZYX~ΔENW

d)

ΔYZX~ΔNWE

19.
The two right triangles below are similar. What is x, the missing side length in triangle DEF? 
a)
3.75
b)
9.75
c)
10
d)
12
20.
Which triangle is similar to the above triangle ?
a)
A
b)
B
c)
C
d)
D