Final answer:
The subject of this question is Mathematics. The concept being discussed here is the Alternate Exterior Angles Theorem (AEA Theorem), which is a mathematical theorem that deals with the angles formed by a transversal intersecting two parallel lines. According to this theorem, alternate exterior angles are congruent.
Step-by-step explanation:
The subject of this question is Mathematics. The concept being discussed here is the Alternate Exterior Angles Theorem (AEA Theorem). This theorem is a mathematical theorem that deals with the angles formed by a transversal intersecting two parallel lines. According to this theorem, alternate exterior angles are congruent.