The sum of the interior angles in a triangle is always $180^\circ$.
So, the average value of the measures of the three interior angles is $180^\circ/3 = \boxed{60^\circ}$.The answer is: 60
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
What is the average value of the measures of the three interior angles in any triangle?

### Answer:
