Question

What theorem or postulate can be used to justify that the two triangles are congruent?

Answer 1

The theorem or postuale that can be used to justify that the two triangles are congruent is the Angle-Side-Angle postulate (ASA).

Answer 2

If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the triangles are congruent (Angle-Side-Angle or ASA).