Original sentence: Congruent examples of dilatations are translations, rotations, and the identity transformation.In mathematics, a homothety (or homothecy or dilation) is a transformation of space which takes each line into a parallel line (in essence, a similarity that is similarly arranged)
Edited sentence: Congruent examples of dilatations are translations, reflections, and the identity transformation.In mathematics, a homothety (or homothecy or dilation) is a transformation of space which takes each line into a parallel line (in essence, a similarity that allows reflection in a single point, but otherwise preserves orientation)