No, △YXZ and △AZX cannot be proven to be congruent using the SSA (Side-Side-Angle) postulate. The SSA postulate states that if two sides and the angle opposite one of the sides are congruent in two triangles, then the triangles are congruent. However, in this case, we only know that side XZ is congruent in both triangles, but we do not know the lengths of the other two sides or the measures of the angles. Therefore, we cannot determine if the triangles are congruent using the SSA postulate.
