what is a similarity transformation? What is necessary to determine whether two or more shapes are similar? Explain in terms of rigid transformations, dilations, proportionality, and scale factors.
Similarity transformations include dilation and any number of rigid transformations. In a similarity transformation, the ratio of the lengths of corresponding sides in the image and the preimage is equal to the scale factor of dilation. Two or more similar figures will have corresponding sides that are proportional in length.
