Question

date, type
assertion
a _ is a _, _, _, or any sequence of the three.
rigid transformations take lines to _, angles to _ of the same measure, and segments to _ of the same length.
diagram

Explanation:

The diagram shows a rigid transformation (rotation) between two triangles. Rigid transformations preserve shape and size, including lines, angles, and segments. The three basic rigid transformations are translation, rotation, and reflection.

Answer:

1. rigid transformation; transformation; translation; rotation; reflection
2. lines; angles; segments