Final answer:
Alternate interior angles are congruent angles found on opposite sides of a transversal cutting through two parallel lines.
Step-by-step explanation:
In the context of parallel lines and the angles formed when these lines are crossed by a transversal, alternate interior angles are pairs of angles that lie between the two lines on opposite sides of the transversal. They are congruent, meaning they have the same measure. If JL and MO are parallel lines and they are cut by a transversal, then each pair of alternate interior angles are equal. Identifying these angles requires looking at the inside of the parallel lines on either side of the transversal.