If ABCD is a parallelogram. A= 2x+10, B=70? . Find x Share with your friends Share 0 Arnab Gupta answered this 1 View Full Answer Ruchir Padhye answered this Assuming your question is angle A = 2x + 10 and angle B = 70, The adjacent angles of a parallelogram are supplementary. They add to 180. So A + B = 180 2x + 80 = 180 2x = 100 x = 50 So x = 50 1