If a figure has been dilated by a scale factor of one third, which transformation could be used to prove the figures are similar using the aa similarity postulate? a translation because it can map one angle onto another since dilations preserve angle measures of triangles. a rotation because it can change the orientation of a figure since dilations do not preserve orientation. a dilation because it can map one side onto another since dilations preserve side length of triangles. a reflection because it can change the orientation of a figure since dilations do not preserve orientation.