This section deals with some special types of transformation. Transformation is a change of something to some other thing. In mathematics transformation is a function that moves (takes) plane figures from its position to some other location in the plane. There are many versions of transformations, such as, those preserving shape and size, those stretching or shrinking, those preserving orientation (direction) or changing orientation, and any combination of these. In this section, we will consider transformations that changes position and/or orientation of plane figures without changing their shape and size.