Answer:
Angle A = 120 degrees
Explanation:
The vertical angle theorem states that if two angles are vertical (on opposite sides of two intersecting lines), those two angles are congruent.
By the Vertical Angle Theorem, A and the 120° are congruent. Therefore, Angle A = 120°.
The answer is Angle A = 120 degrees.
I hope you find my answer helpful. Feel free to ask questions if anything confuses you. Happy studying. :)