Geometry

Question Analysis:
This question tests knowledge of what properties are preserved under rigid transformations.

Key Concept Explanation:
Rigid motions preserve lengths, angles, size, and shape, but orientation is only preserved in some cases.

Step-by-Step Solution:
Translation and rotation preserve orientation.
Reflection reverses orientation (e.g., left-handed becomes right-handed).
Therefore, orientation is not always preserved.

Option Analysis:
A: Always preserved → not correct.
B: Always preserved → not correct.
C: Always preserved → not correct....