KnowraOrthocenterLinked fromLinked fromThe 16 pages that link to Orthocenter, each with the reason it gives.All 16Broader topic 3Related 8Compared with 5CircumcircleRelated: It is a distinct center whose location, together with the circumcenter, determines Euler’s line.Euler lineRelated: It is the other defining endpoint of the Euler line’s center alignment.Nine-point circleRelated: Three of the circle’s points are the feet of the altitudes through the vertices.Simson lineRelated: Special choices of the circle point relate Simson constructions to altitude geometry.Feuerbach's theoremRelated: Its midpoint with the circumcenter is the nine-point center.Fagnano's problemRelated: Its position inside an acute triangle determines the right-angle relations among orthic-triangle vertices.Bottema's theoremRelated: It is the familiar concurrency point defined by perpendiculars in triangle geometry.Droz-Farny line theoremRelated: Both perpendicular lines in the theorem pass through this point.