Main Page | See live article | Alphabetical index In mathematics, a similarity transformation H is applied about a point O and is a mapping of each point P in plane (or space) to a point P'. The following relationship holds in a similarity transformation: OP/OP' = k, where k is a constant of H, and OP, OP' are vectors. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.