Geometry

Question Analysis:
This question assesses understanding of rigid transformations used to prove congruency.

Key Concept Explanation:
Congruent shapes must have identical size and shape, achieved through rigid transformations (rotation, reflection, translation).
Dilation changes size, violating congruency.

Step-by-Step Solution:
Identify rigid transformations: rotation, reflection, translation (preserve size/shape).
Dilation scales the shape, altering size.

Option Analysis:
A, B, C: P...