Which diagram could be used to prove △ABC ~ △DEC using similarity transformations? Triangle A B C is reflected across side A C and then is dilated to form smaller triangle D C E. Triangle A B C is reflected, translated to the left, and then is dilated to form triangle D C E. Triangles A B C and D E C are shown. The angle measures differ between the 2 triangles. Triangles A B C and D E C are connected at point C. The triangles are shaped differently. answer A