Question

which of the numbered stones shown cannot be mapped to another with a rigid motion? stones cannot be mapped to another stone with a rigid motion. (type whole numbers. use a comma to separate answers as needed )

Explanation:

Step1: Understand rigid motion

Rigid motion preserves shape and size. We check each stone's shape - if it's unique among others, it can't be mapped by rigid motion.

Step2: Analyze each stone

By visual inspection, we look for stones with a distinct shape compared to others. Stone 13 has a unique triangular - like shape that no other stone matches.

Answer:

13