x=
A) 80
B) 90
C) 100
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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)
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