How do we use the other definitions of transformations?

Glide Reflection:
A combination of a reflection in a line and a translation  along the line.
Orientation:
Orientation refers to the arrangement of points relative to one another, after a transformation has occurred.
Isometry:
An isometry is a transformation of the plane that preserves length.
Invariant:
A figure of property that remains unchanged under a transformation of the plane is referred to as invariant . No variations have occurred.
Translation:
Orientation size (isometry)