Question

1. what property of rigid transformations makes them suitable for proving triangle congruence? a. they only translate figures. b. they preserve side lengths and angle measures. c. they preserve proportionality. d. they change the size of the triangle.

Explanation:

Rigid transformations (translations, rotations, reflections) preserve side - lengths and angle - measures. This is crucial for proving triangle congruence as congruent triangles have equal corresponding side - lengths and angle - measures.

Answer:

b. They preserve side lengths and angle measures.