Answer:

Explanation:
The given figure is a parallelogram because:
- opposite sides are parallel to each other.
In a parallelogram:
- The measure of adjacent angles equals 180 degrees.
So,
128° + ∠C = 180°
- Subtract 128 from both sides
∠C = 180° - 128°
∠C = 52°
![\rule[225]{225}{2}](https://img.qammunity.org/2024/formulas/mathematics/high-school/yk3l6bxs46equldxx0z8qla0zuvm8l328e.png)