Question

Johnny is going to use ASA to prove that VWX is congruent to YZX
Which of these is a necessary step in Johnny's proof?
A. Prove that Angle VWX is congruent to Angle YZX by alternate interior angles.
B. Prove that VW is congruent to YZ by CPCTC
C. Prove that VXW is congruent to YXZ by vertical angles.
D. Prove that Wx is congruent to XZ by CPCTC.