A dilation (similarity transformation) is a transformation that changes the size of a figure. ... Dilations preserve angle measure, betweenness of points and collinearity. It does not preserve distance. Simply, dilations always produce similar figures .

How does the dilation affect angle measures?

While they scale distances between points, dilations do not change angles. ... All lengths of line segments in the plane are scaled by the same factor when we apply a dilation.

Do dilations preserve angle measures and side lengths?

Dilations. The last transformation is a dilation. ... Since side length is not preserved, dilations are not rigid transformations. We call transformations that don't preserve length and angle measurement (as in a dilation) a non-rigid transformation.