Final answer:
A transversal intersecting parallel lines creates congruent alternate exterior angles within each pair.
Step-by-step explanation:
Part A: To support Ricky's claim, let's consider a pair of parallel lines and a transversal. When the transversal intersects the parallel lines, it creates alternate exterior angles.
These angles are congruent to each other, but not congruent to any other angle formed by the transversal.
Part B: To refute Ricky's claim, we need to find a situation where the angles within each pair of alternate exterior angles are congruent to each other.
However, this is not possible since alternate exterior angles are always congruent to each other and not congruent to any other angle formed by the transversal.