Question

10
which of the following describes a rigid motion transformation?
a. slicing a sandwich into 4 pieces
b. dilating a picture
c. enlarging the size of a parking spot
d. hitting a tennis ball over a net

Explanation:

A rigid motion transformation preserves the shape and size of a figure (only changes its position/orientation).

• Option A: Slicing a sandwich changes its structure (not a rigid motion as it modifies the object's parts, not just position).
• Option B: Dilation changes the size (scaling), so not rigid motion.
• Option C: Enlarging a parking spot changes size (scaling), not rigid motion.
• Option D: Hitting a tennis ball moves it (translation/rotation, preserves size/shape), so it's a rigid motion.

Answer:

D. Hitting a tennis ball over a net