What else would need to be congruent to show that ABC= XYZ by ASA?

AC = XZ

Step-by-step explanation:

Since you're working with the ASA postulate, you're looking to show congruence of the angles at either end of a side. You're given side AC and angle A as congruent with their counterparts. Obviously, you also need to show the congruence of angle C with its counterpart, angle Z.