Question

Which of the following is not preserved under a dilation.

I. orientation
II. parallelism
III. Distance
IV. ANgle measure

A. I only
B. II,III,IV
C.II and III
D. III only

Answer 1

Properties that are preserved under dilation are:
Angle measures
Parallelism
Collinearity
Orientation

So distance is not preserved (distances of segments are not similar in all circumstances excluding a scale factor of 1.) So the answer would be III which is letter D.