EntityQ1560127· pop 10· linked from 2 articlesVecten pointsSign in to savetriangle centersConnectionstriangleEntitysquareEntityNîmesEntityplaneEntityEuclidean geometryEntityEuler lineEntitynine-point circleEntityMathWorldEntityEric W. WeissteinEntitytriangle centerEntityJoseph Diez GergonneEntityisogonal conjugateEntityEncyclopedia of Triangle CentersEntityClark KimberlingEntitynine-point centerEntityNapoleon pointsEntityCategoriesTriangle centers