P1 P2 p1.is_intersecting(p2) = false P1 P2 p1.is_intersecting(p2) = false P1 P2 p1.is_intersecting(p2) = true P1 P2 p1.is_intersecting(p2) = true P1 P2 p1.is_intersecting(p2) = true P1 P2 p1.is_intersecting(p2) = true P1 P2 p1.is_intersecting(p2) = true P1 P2 p1.is_intersecting(p2) = false P1 P2 p1.is_intersecting(p2) = false