ANSWER
Isometry
EXPLANATION
A transformation is the change in the position or orientation of a figure.
There are several types of transformations.
It is note-worthy that symmetry and similarity are not types of transformations.
The types of transformations that do not involve a change in shape or size of the figure are:
- reflection
- rotation
- translation
These are called isometric transformations.
So, the answer is isometry.
