The transformation that maps the pre-image to the image is dilation
A transformation is a technique used to move an object or change its size across a xy-plane.
According to the question, 2 triangles have identical angle measures but different side lengths. Since the triangles have different side measures, it shows that one is bigger than the other.
Since dilation changes the image of an object by enlarging or reducing using a scale factor, hence the transformation that maps the pre-image to the image is dilation
Learn more on dilation here: https://brainly.com/question/10253650
