The problem states: In Triangle ABC,m<B = 120, m<A = 55, and D is the point on line AC such that line BC bisects < ABC. Which is the longest side of triangle ABD? I drew a diagram of a triangle I labeled ABC. I drew a line from <B and labeled the end of it D. C is obviously the largest angle,so the side opposite it should be the longest side. I thought it should be AD, but the book said it was AB. Why would that be?