If line segment BC=80, and line segment AC=89. then line segment AB=________?

Question

If line segment BC=80, and line segment AC=89. then line segment AB=________?

Answer 1

Like Mark was saying, given this context it is difficult to say a distance if we do not know the position of A in relation to BC. If it's a straight line, then its just the two distances added. If it is somewhere else in the plane, we need more information. Hope that helps.