Show:
Terms, Definitions, T/F, Fill in the Blank
Scale Factor
New image
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

 A figure with a scale factor between 0-1 is?

Smaller than the original figure.

200

What is center of dilation?

The center of the figure

200
Preimage: (7, 8) Image: (56, 64)
What is 8?
200
Preimage: (3, 8) Scale factor: 5
What is (15, 40)
200

Are dilations ever congruent? 

No, never, they are only silimar.

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 1/2?
300
Preimage: (27, 37) Scale factor: 2
What is (54, 74)
300

Describe an image that has been dilated with a scale factor of 4.

The image has sides that are four times as long. 

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

A wallet-sized photo that is 1.5 x 3 is enlarged so the new width is 9. What is the new length?

What is 18?

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

Where was the center of problems 1 and 2 in the slide presentation?

(0,0) or the origin