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If an image of a triangle is congruent to the pre-image, what is the scale factor of the dilation? 0.1 1/2 1 10
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If an image of a triangle is congruent to the pre-image, what is the scale factor of the dilation?

0.1
1/2
1
10

User Ricardo Fiorani
by
5.7k points

1 Answer

7 votes
The scale factor of the dilation is 1 because the image and pre-image share the SAME everything (lengths, area, etc.). So if you multiply one of the image’s length by any number other than one, the pre-image will change.
User Christopher Bonitz
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