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A transformation is rigid if which of the following occurs?

Option #1: The preimage and image are the same shape and size.

Option #2: The angles are the same but not the side lengths.

Option #3: The side lengths are the same but not the angle measures.

Option #4: The figures change shape but not size.

1 answer

A transformation is considered rigid if the preimage and image are the same shape and size. This means that the transformation preserves distances and angles, making the two figures congruent.

Therefore, the correct option is:

Option #1: The preimage and image are the same shape and size.