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
Into a Circle March 1988, and reached No. 5 in the chart. Into a Circle embarked on their final tour in September 1989, with Annie Anxiety joining the line-up on backing vocals. The band broke up in October 1989. Hampshire is a member of Thailand-based band Futon, alongside Simon Gilbert (Suede). Jepson later worked as a concert promoter and currently teaches live sound and tour management at the Brighton Institute of Modern Music. Into a Circle Into a Circle (also as In Two a Circle and In2a0) were an English new wave duo, formed in April 1985 by Paul "Bee" Hampshire and Barry