Question

a transformation is applied to a figure to create a new figure. which transformation does not preserve congruence? a a translation 3 units right b a rotation of 90° clockwise c a reflection across the x - axis d a dilation by a scale factor of 1/3

Explanation:

Congruent figures have the same shape and size. Translations, rotations, and reflections are rigid - motions that preserve congruence. Dilation changes the size of a figure. A dilation by a scale factor other than 1 will not result in a congruent figure.

Answer:

D. A dilation by a scale factor of $\frac{1}{3}$