Use the model to write the equation that represents the problem I have 3 squares and I want to divide them by 3/4

Iam at home. /: i am playing video games. translate the following statement into symbolic form.

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.

Which best explains why this triangle is or is not a right triangle ?