Geometry

Question Analysis:
Tests understanding of the formal method to prove congruence via transformations.

Key Concept Explanation:
Congruent figures can be matched exactly through one or more isometries (translation, rotation, reflection).

Step-by-Step Solution:
To verify congruence:
→ Use a transformation or a sequence
→ If image and pre-image overlap exactly, they’re congruent

Option Analysis:
A: not enough to check side lengths alone
B: correct
C: area doe...