Terms, Definitions, T/F, Fill in the Blank
Scale Factor
New image
Proportional or not?
Review
100
A transformation that changes the size but not the shape of a geometric figure
What is dilation?
100
Preimage: (2, 2) Image: (5, 5)
What is 2.5?
100
Preimage: (7, 2) Scale factor: 10
What is (70, 20)
100

Preimage: (7, 8) Image: (56, 63)

If Yes, What is the Scale Factor?

No

100

A rectangle with side lengths of units 2 and 3 is dilated by scale factor 1/2 and then the image is dilated by scale factor 3.  What are the ide lengths after the second dilation?

Side lengths will be 3 and 4.5

200
The center of the figure
What is center of dilation?
200
Preimage: (7, 8) Image: (56, 64)
What is 8?
200
Preimage: (3, 8) Scale factor: 5
What is (15, 40)
200

Preimage: (1, 10) Image: (10, 1)

If Yes, What is the Scale Factor?

No

200

Vertex D of a quadrilateral is located at point (3,4).  What is the distance from the origin to D' after a dilation with scale factor 2?

10 units

300
Describes how much larger or smaller the image of a dilation is than the pre image
What is scale factor?
300

Preimage: (6, 3) Image: (2, 1)

What is 1/3?

300
Preimage: (27, 37) Scale factor: 2
What is (54, 74)
300

Preimage: (42, 49) Image: (6, 7)

If Yes, What is the Scale Factor?

Yes

Scale Factor 1/7

300

A rectangular figure has an area of 32 square units.  What is the area after a dilation with a scale factor of 1/2?

8 Square Units

400
True or false: dilation is how large an image is after it is enlarged or reduced.
False
400
Preimage: (46, 37) Image: (23, 18.5)
What is 1/2?
400
Preimage: (28, 83) Scale factor: 5
What is (140, 415)
400

Preimage: (48, 336) Image: (1, 7)

If Yes, What is the Scale Factor?

Yes

Scale Factor 1/48

400
Chocolate fudge overload extra large donuts are on sale for $5.99 3/4 dozen. What is the cost of one donut?
What is $0.67?
500
A dilation is a ________ that changes the ________ but not the shape of a geometric figure.
transformation, size
500
Preimage: (53.7, 35.8) Image: (161.1, 107.4)
What is 3?
500
Preimage: (222, 17) Scale factor: 34
What is (7548, 578)
500

Preimage: (247, 583) Image: (1729, 4081)

If Yes, What is the Scale Factor?

Yes

Scale Factor 7

500

A circle has an area of 16 pi square units.  What is the area of the circle (in terms of pi) after a dilation with a scale factor of 3?

144 pi square units.


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