Question

What elese would need to be congruent ?

Answer 1

C. AC = XZ

For the triangles to be congruent by ASA, the measurements of two angles and one side must be proven congruent. Since two sets of congruent angles are already given, one side must also be congruent.
When proving congruency using ASA, the congruent parts of the triangles must be in this order: Angle, Side, Angle. So, you must find the side that is between the two sets of congruent angles.

Answer 2

AC must be congruent to XZ in order to prove congruency by ASA. So, the answer is C.