In the coordinate plane, D'E'F'G' is the image of parallelogram DEFG after a dilation with a scale factor of 4 centered at the origin. The area of D'E'F'G' is 72 square units. What is the area of DEFG?

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.