Geometry

Question Analysis:
This question tests how to justify congruence in proofs using transformations.
The main focus is recognizing proper reasoning in a congruence argument.

Key Concept Explanation:
Proofs involving rigid transformations use statements like:
“Since a translation is a rigid motion, it preserves size and shape. Therefore, the figures are congruent.”

Step-by-Step Solution:
Recognize the transformation type: translation = rigid motion.
Use this to justify congruence.

Option Analysis:
A. Incorrect – Equal perimeter ≠ always congruent.
B. Correct – Direct and precise reasoning using rigid moti...