Practice Page
Directions: Read carefully.

1.
           monster1               monster2
Is this an example of a dilation?

yes
no

 

 

2.
dogpent
Under the dilation shown at the left, the value of the "?" is:
2
2.5
3

 

 

3.
chippic
Under dilations, the picture shown at the left has been reduced in size. The scalar factor is:
¼
½
2
4

 

 

4.
cutter
The length of the small car is 4 inches. Under a dilation of scale factor of 2 the length of the larger car is:
2 inches
8 inches

 

 

5.
geopic
The large design shown at the left is 6 feet wide. After a dilation, the design is 2.4 feet wide. The scalar factor for this dilation is:
3
2.5
0.5
0.4

 

 

6.
greenbluetri
ΔA'B'C' is the image of ΔABC under a dilation centered at O of ratio 1/2. Which of the following relationships is true?
OA' = ½ • AA'
OA = ½ • OB
OA' = 2 • OA
OA = 2 • OA'

 

 

7.
thinkguy
Which of the following properties is NOT preserved during a dilation?

angle measure
orientation
parallelism
distance

 

 

8.
didef2
The diagram at the left shows a dilation of scale factor of ½. Which segment is parallel to de5 ?
epfp
d'e'
fd
d'f'

 

 

9.
Which of the following statements is NOT true?

Dilations create similar figures.
Dilations preserve angle measure.
Dilations may have a negative scale factor.
Dilations on a coordinate axis are always centered at the origin.

 

 

10.
greentriangle

Under the dilation shown at the left, what is the value of AB ?

6
9
12
15

 

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