Power of a point P intersects the circle at A and B, the endpoints of the diameter. Their respective products of distances are equal to each other and to the power of point P in that circle This equality is sometimes known as the ""secant-tangent theorem"", ""intersecting chords theorem"", or the ""power-of-a-point theorem"". The power of a point is used in many geometrical definitions and proofs. For example, the radical axis of two given circles is the straight line consisting of points that have equal power to both circles. For each point on this line, there is a unique circle centered on that point
Maritime Circle Line Maritime Circle Line The Maritime Circle Line (MCL) is a private harbor cruise line and operator in the Port of Hamburg, Germany, established by Gregor Mogi in 2007. The ferry service is operated on a scheduled timetable, connecting a number of Hamburg's maritime visitor attractions in the eastern port area. The Maritime Circle Line is a one-way circle line with eight stops, offering three tours daily from April to September, while the service is less regular during the winter season. The total travel time is some 2 h, with travel time between stops varying between 10 and 20 minutes. The