Math

A triangle is dilated with the center of dilation at point U. Point E is a vertex of the triangle and point E′ is the corresponding vertex of the image. If UE = 2 centimeters and U′E′=10 centimeters, what is the scale factor?
A. −5.0
B. −0.2
C. 0.2
D. 5.0

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  1. scale factor = (new length) / (original length)

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  2. the Answer is
    D 5.0

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  3. What are the coordinates of the image of point E after a dilation with center (0, 0) and scale factor of 1/3

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