1. If quadrilateral ABCD is a parallelogram, then which relation must be true?

Am∠A = m∠B


Bm∠B = m∠D


CAB = DA


DAB = BC



Draw out the diagram and reference the fact that opposite angles and opposite sides are congruent in parallelograms


diagram is attached

If quadrilateral ABCD is a parallelogram, then which relation must be true? A) m A = m B B) m B = m D C) AB = DA D) AB = BC Draw out the diagram and reference t class=