Part A
Yes, triangle ABC and triangle APQ are similar because of Angle-Angle similarity.
Angle BAC is congruent to Angle PAQ because of reflexive property (they share the same angle).
It is given that Segment BC is parallel to Segment PQ, so Angle ABC is congruent to Angle APQ because the corresponding angles postulate.
Part B
Segment PQ corresponds to Segment BC because they are parallel to each other.
Part C
Angle APQ corresponds to Angle B because of the corresponding angles postulate.
