Question

The green shape is a dilation of the black shape.

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​What is the scale factor of the dilation?

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Answer 1

0.5

Explanation:

all sides of the new, green shape are half as long as the sides of the original black shape.

Answer 2

The scale factor of the dilation is 1/2

Explanation:

The longest side on the black shape is 20 units long. On the green shape, this same side is now 10 units long

The length has halved (20 ÷ 2 = 10) so the scale factor is 1/2

Hope this helps!