Question

what is true about every rotation?
the image is smaller than the pre - image.
the image and pre - image are congruent.
the image is larger than the pre - image.
the image overlaps the pre - image.

Explanation:

A rotation is a rigid transformation. Rigid transformations preserve shape and size, meaning image and pre - image are congruent.

Answer:

The image and pre - image are congruent.