Question

1. which transformation(s) do not preserve congruence?

Explanation:

Step1: Recall congruence - preserving transformations

Rigid - motions (translations, rotations, and reflections) in geometry preserve congruence. Translations slide a figure, rotations turn a figure around a point, and reflections flip a figure over a line. These transformations do not change the size or shape of the figure, thus preserving congruence. Non - rigid transformations like dilations change the size of a figure and do not preserve congruence.

Answer:

Translations, rotations, and reflections preserve congruence.