Which equation correctly describes the relationship between the measures of the angle and arcs formed by the intersecting secants? m∠1=12(mPQ−mRS) m∠1=12(mPQ+mRS) m∠1=mPQ−mRS m∠1=12mRS Circle with two chords. Point P at 1 o clock, point Q at 5 o clock, point S at 8 o clock, and point R at 9 o clock are on the circle. Segment P R and segment Q S intersect each other outside the circle. The angle made at the intersection point is labeled as 1.