Geometry

Question Analysis:
The problem focuses on transformations that preserve length.

Key Concept Explanation:
An isometry keeps all distances unchanged. Only rotations, translations, and reflections do this.

Step-by-Step Solution:
Check if side lengths remain the same.
Rotation is an isometry, so it preserves distances. ✅

Option Analysis:
A) Dilation (Incorrect) – Changes size.
B) Rotation (Correct) – Preserves distances.
C) Horizontal Str...