What else would to be congruent show that abcdef by ASA?

To show that triangle ABC is congruent to triangle DEF by the Angle-Side-Angle (ASA) criterion, you need to establish that two angles and the included side of triangle ABC are congruent to the corresponding two angles and the included side of triangle DEF. Specifically, you would need to demonstrate that ∠A is congruent to ∠D, ∠B is congruent to ∠E, and the side AB is congruent to side DE. Once these conditions are satisfied, you can conclude that triangle ABC is congruent to triangle DEF by the ASA theorem.