KnowraPower of a pointLinked fromLinked fromThe 18 pages that link to Power of a point, each with the reason it gives.All 18Related 11Narrower topic 6Compared with 1ChordNarrower topic: Its circle-secant relations include the intersecting-chords theorem.Radical axisNarrower topic: Subtracting the two circles’ powers gives the linear equation of their radical axis.Intersecting chords theoremNarrower topic: The theorem is the interior-point case of this broader circle relation.Tangent–secant theoremNarrower topic: The theorem is the tangent case of the general relation between a point and a circle.Intersecting secants theoremNarrower topic: This broader invariant unifies the external, internal, and tangent cases.Butterfly theoremNarrower topic: This invariant expresses the equal products underlying the butterfly configuration.