Question

which transformations are rigid transformations? check all that apply. dilation reflection rotation stretch translation

Explanation:

A rigid transformation (also called an isometry) is a transformation that preserves the shape and size (distance and angle measures) of a figure.

• Dilation: Changes the size of the figure (scales it), so not rigid.
• Reflection: Flips the figure over a line, preserves shape and size.
• Rotation: Turns the figure around a point, preserves shape and size.
• Stretch: Alters the size/proportions, not rigid.
• Translation: Slides the figure, preserves shape and size.

Answer:

B. reflection, C. rotation, E. translation