Geometry

Question Analysis:
This tests understanding of the reason behind congruence after a translation.
The main focus is the reasoning for congruence due to rigid motion.

Key Concept Explanation:
Rigid transformations keep side lengths and angles the same.
A translation does not stretch, rotate, or flip the triangle — it preserves congruence.

Step-by-Step Solution:
A translation only shifts the triangle.
The shape and size stay the same.
So congruence is maintained.

Option Analysis:
A. Incorrect – Doubling sides = dilation, not translation.
B. Incorrect – Area remains constant in translation.
C. Correc...