Mariah cuts a rectangle along its diagonal. Two congruent triangles are created. The two angles created by the diagonal have a sum of 90°. The smaller angle is  the measure of the larger angle. Let x represent the measure of the larger angle and let y represent the measure of the smaller angle. What is a system of equations that can be used to find the measures of the two angles? x + y = 90 and y = x – y = 90 + x and y = 5 + x y = 90 + x and y = 5x x + y = 90 and y =