What is the measure of \goldE{\angle y}∠ystart color #a75a05, angle, y, end color #a75a05 ? An angle labeled y is composed of 3 angles joined together, each with a measure of 36 degrees.

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.