Question

2.) consider the sets of triangles. which transformation is not a rigid transformation.

Explanation:

A rigid transformation preserves distance and angle - measures. Translations, rotations, and reflections are rigid transformations. Dilation is not a rigid transformation as it changes the size of a figure. In option D, the triangle appears to be resized (dilation), while options A, B, and C show translations, rotations or reflections respectively.

Answer:

D.