Question

Which congruence theorem proves the following triangle is congruent. (ASA, SSS, SAS or AAS)

Answer 1

(d) AAS

Explanation:

The vertical angles are congruent. The adjacent marked angles are congruent. And the side after that (working clockwise) is marked congruent. When you have congruent Angle, Angle, Side, the appropriate theorem to claim is the AAS theorem.