We use the other definitions of transformation by glide reflection,orientation, isometric , and invariant .
*glide reflection: is the reflection of a cine and a translation along the line.
*orientation: refers to the arrangement of points relative to one another, after a transforming has occured.
*isometric: is a transformation of the plane that preserves length .
*invariant: a figure or property that remains unchanged under a transformation of the plane is referred to as a "invariant" no "variations" have occurred.
these are fine, but orientation is a little unclear. You might find some examples to help explain or show what you mean.
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