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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

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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2 votes
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

asked
User Ricardo Fiorani
by
9.0k 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.
answered
User Christopher Bonitz
by
9.0k points
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