Two chords intersect at a point inside a circle that is not the center of the circle. Which statement must be true?
A
The measures of each pair of opposite arcs sum to 180°.B
Each angle measure is equal to the measure of the arc it intercepts.C
The sum of the measures of each pair of vertical angles is equal to the sum of the measures of the intercepted arcs.D
Each arc measure is equal to one-half the sum of the vertical angles that intercept the arc.