Answer:
40 degrees
Explanation:
Okay first of all, we know that GD and HC are parallel, and based on the rules of parallel lines we also know that angle AIJ is equal to MLD. We also know that IJM is equal to 70 degrees because opposite angles are always congruent. Because AIJ is equal to MLD, we know that AIJ is 110 degrees. Because AE is a straight line, we can determine that MIJ is equal to 180-AIJ, or 70 degrees. The total meausre of a triangles angles is always 180, so to determine the measure of AMB (which is the same angle as IMJ) we simply need to subtract MIJ and IJM from 180. This is 180-70-70=40, so AMB = 40 degrees