Geometry

Question Analysis:
This question tests the ability to distinguish between isometric and non-isometric transformations.

Key Concept Explanation:
Isometries preserve distances.
Dilations change size, making them non-isometries.

Step-by-Step Solution:
Rotation, translation, and reflection all preserve distance → they are isometries.
Dilation changes size → NOT an isometry.

Option Analysis:
A, B, D (Correct Isometries)...