Geometry

Question Analysis:
This question tests the fundamental definition of a glide reflection.

Key Concept Explanation:
A glide reflection is a combination of:
A reflection over a line (the mirror line).
A translation parallel to that line.

Step-by-Step Solution:
Option A describes a rotation, not a glide reflection.
Option B matches the definition of a glide reflection.
Option C describes a rotation (by the angle twice the angle between the lines).
Option D is a similarity transformation, not a glide reflection.

Common Mistakes:
Confusing glide reflection with other transformations (e.g....