Based on the angles of intersecting chords theorem, the value of x is: A. 80.
The angles of intersecting chords theorem states that, half the sum of the measure of the intercepted arcs equals the measure of the angle formed by two intersecting chords in a circle.
120 = 1/2(2x + x) [angles of intersecting chords theorem]
2(120) = 3x
240 = 3x
240/3 = x
80 = x
x = 80 (option A)
Learn more about the angles of intersecting chords theorem on:
https://brainly.com/question/15554370
#SPJ9