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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)
No
100

The ORIGINAL image on a coordinate plane is called...

the PRE-IMAGE

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)
no
200

A pre-image that gets smaller is called a(n) ____ while, a pre-image that gets larger is called a(n) ____.

reduction, enlargement

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
Preimage: (42, 49) Image: (6, 7)
Yes
300

If Shahad types 60 sentences in 25 minutes, how many sentences does she type in 5 minutes?

12 sentences

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)
yes
400
Dilated figures are also known as ________ figures.

(same shape, different size)

SIMILAR

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: (1799, 4081)
Yes
500

Sadie buys 4 grams of titanium for a robotics project for $11. Quin buys 2.5 grams of the same titanium for the same robotics project for $6.25. Who gets the better deal.

Quin