What is the value of b in the equation?

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

Which conjunction is disjunction is equivalent to the given absolute value inequality? |x+2|< 18

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.