Consider the quadrilateral abcd. which information could be used to prove that the quadrilateral abcd is a parallelogram? a) apply the distance formula to show that diagonals ac and bd are congruent. b) apply the distance formula to show that segments ab and ad are congruent and segments cd and bc are congruent c) apply the slope formula to show that segments ab and cd are perpendicular and segments ad and bc are perpendicular. d)apply the slope formula to show that segments ab and cd have the same slope and segments ad and bc have the same slope