In parallelogram defg, dh = x + 2 hf = 2y, gh = 4x-3 and he = 4y + 1. find the values of x and y. the diagram is not drawn to scale.

To prove that angle def = angle dgf by sas, what additional information is needed? def congruent to dgf dfe congruent to dfg de congruent to dg dg congruent to gf