1. The problem statement, all variables and given/known data It looks as if 50 degrees is an external angle of the triangle.So it should be greater than the two opposite interior angles (i.e x and the other one). But book tells a different answer. Somebody please guide me. Zulfi. 2. Relevant equations No eq. Rule: Exterior angle of a triangle is greater than the two opposite interior angles of atriangle 3. The attempt at a solution 50 degree must be greater than x because it is an exterior angle of a triangle. Somebody please guide me. Zulfi.