Question

which transformations are rigid transformations? select all that apply!
□ dilation
□ stretch
□ reflection
□ translation
□ rotation

Explanation:

Rigid transformations preserve the shape and size of a figure (i.e., distances and angles remain unchanged). Dilation and stretch change the size (scale factor ≠ 1 for dilation, stretch alters dimensions), so they are non - rigid. Reflection (flips over a line), translation (slides), and rotation (turns around a point) preserve the figure's shape and size, so they are rigid transformations.

Answer:

C. reflection, D. translation, E. rotation