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Worksheets8th Grade Q1 Review 2
Total questions: 25
Worksheet time: 2hrs 5mins
Name
Class
Date
1.
The pair of figures is similar. Find the missing side.
a)
x = 9
b)
x = 28
c)
x = 7
d)
x = 63
2.
Solve for X.
a)
2 ft
b)
3 ft
c)
4 ft
d)
6 ft
3.
The pair of figures is similar. Find the missing side.
a)
x = 20
b)
x = 12
c)
x = 5
d)
x = 4
4.
The triangles are similar, solve for the question mark.
a)
8
b)
12.5
c)
18
d)
24
5.
a)
4 ft
b)
15 ft
c)
18 ft
d)
2 ft
6.
To find the height of a very tall pine tree, you place a mirror on the ground and stand where you can see the top of the pine tree. How tall is the tree?
a)
144 feet
b)
72 feet
c)
36 feet
d)
8 feet
7.
Solve for X.
a)
2 ft
b)
3 ft
c)
4 ft
d)
6 ft
8.
Matching sides are called
a)
Corresponding Sides
b)
Corresponding Angles
c)
The Same
d)
Congruent Sides
9.
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.
10.
Gwen scans a photo that is 4 in. wide by 6 in. tall into her computer. If she scales the height down to 3 in., how wide should the similar photo be?
a)
3 in
b)
2 in.
c)
4 in
d)
1 in
11.
A rectangular garden is 45 ft wide and 70 ft long. On a blueprint, the width is 9 in. Identify the length on the blueprint.
a)
7 in
b)
9 in
c)
12 in
d)
14 in
12.
Find the perimeter of the large triangle.
a)
24
b)
36
c)
12
d)
54
13.
Complete each proportion.
CB / DM = AC / ?
CB / DM = AC / ?
a)
BM
b)
MA
c)
BC
d)
AD
14.
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
15.
Dilate the figure by a scale factor of 3 with the origin as the center of dilation. What are the coordinates of the image?
A(3,3) B(6,6) C(9,3)
A(3,3) B(6,6) C(9,3)
a)
A'(9,9) B'(18,18) C'(27,9)
b)
A'(6,6) B'(9,9) C'(12,6)
c)
A'(0,0) B'(3,3) C'(6,0)
d)
A'(1,1) B'(2,2) C'(3,1)
16.
Choose the correct scale factor:
a)
2
b)
3
c)
1/3
d)
1/2
17.
The point (8, 12) was dilated to become point (2, 3). What was the scale factor?
a)
½
b)
¼
c)
4
d)
2
18.
A dilation is which of the following:
a)
only an enlargement
b)
only a reduction
c)
Either an enlargement or a reduction
d)
Neither an enlargement or a reduction
19.
A dilation produces a similar figure
a)
True
b)
False
20.
A dilation produces a congruent figure
a)
True
b)
False
21.
When a dilation has a scale factor greater than one, the dilation is an enlargement.
a)
True
b)
False
22.
When the scale factor of a dilation is less than one, the dilation is a reduction.
a)
True
b)
False
23.
What scale factor was used to produce the image?
a)
2
b)
-2
c)
1/2
d)
1
24.
If your SF = 0.8, what type of dilation is it?
a)
Reduction
b)
Enlargement
25.
If your SF = 6/5, what type of dilation is it?
a)
Reduction
b)
Enlargement
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