dilation, or similarity transformation
is a transformation in which the lines connecting every point P with its image P’ all intersect at a point C, called the center of dilation, and CP’/CP is the same for every point P.
center of dilation,
and CP’/CP is the same for every point P.
dilation with a scale factor greater than 1
an enlargement, or expansion
dilation with a scale factor greater than 0 but less than 1
a reduction, or contraction