Medium
Value of angle x in the given figure, where an exterior angle of 110 degrees is at one vertex of a triangle and one interior angle is 60 degrees at another vertex, is -
Explanation
Explanation
By the exterior angle theorem, an exterior angle of a triangle equals the sum of the two non-adjacent (remote) interior angles: 110 = x + 60, so x = 110 - 60 = 50 degrees.
PRO TIP
Re-check your working by substituting the answer back into the original question.