Question

a. does distance between points change under a dilation?
it does not change
it does change

b. does angle measure change under a dilation?
it does change
it does not change

Explanation:

Part a

Dilation is a transformation that scales (enlarges or reduces) a figure by a scale factor. The distance between points (side lengths) is multiplied by the scale factor, so distances change. The selected option "It does change" is correct.

Dilation preserves the shape of the figure, which means angle measures remain the same. So the correct option is "It does not change".

Answer:

It does change

Part b