Answer:
120°
Step-by-step explanation:
If the line were to continue down to form a triangle at the bottom, it would cross the line with an interior angle of 70°. Since we have two of the angles, we subtract them from 180°.
180-70-50=60°
That would be the third interior angle at the top of the triangle. Angle x is supplementary to that.
180-60=120°
