Alternate Exterior Angles Help
The term alternate exterior angles is often used when two lines are cut by a third line, a transversal.
In the figure above, lineis a transversal cutting lines and , and there are two pairs of alternate exterior angles:
The Alternate Exterior Angles Theorem states that ifand are parallel, then the pairs of alternate exterior angles are congruent. That is,
The converse of this theorem is also true, and math helper online could do it for you.