KnowraOrthocenterLinked fromLinked fromThe 16 pages that link to Orthocenter, each with the reason it gives.All 16Broader topic 3Related 8Compared with 5Ceva's theoremBroader topic: Ceva can test altitude concurrency using directed ratios, including obtuse triangles.Triangle geometryBroader topic: Its position follows from the perpendicular lines drawn from vertices to opposite sides.Triangle centersBroader topic: It is the center defined by perpendiculars from vertices to opposite sides.