For this case we have that by definition, a flat angle is one that measures 180 degrees. It is observed that a flat angle is formed from the first to the second quadrant.
Now, we must add 55 degrees of the third quadrant, then:
![180 + 55 = 235](https://img.qammunity.org/2020/formulas/mathematics/middle-school/5qx2d6hu1ffwbx6hju4anha8u7r1hkcfgw.png)
Thus, the angle formed is 235 degrees.
Answer:
235 degrees
Option A