mayah117 mayah117 18-09-2017 Mathematics contestada WILL GIVE BRAINIEST TO WHOEVER'S RIGHT!!!! Complete the sentence with the phrase that makes the proof statement true. Lines A and B are parallel. Angles 2 and 3 are congruent because A. vertical angles are congruent. B. of the Transitive Property of Equality. C. of the Corresponding Angles Postulate. D. they form a linear pair.