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.