The figure below shows quadrilateral ABCD. What is the measure of ∠C ?

- 120°
- 115°
- 105°
- 100°
- 80°

**The correct answer is A.**

The sum of the measures of all four interior angles in any quadrilateral is always 360°.

The given three angle measures add up to 65° + 100° + 75° = 240°, so the missing angle measure is 360° - 240° = 120°.