EntityQ110235948· pop 6· linked from 5 articlesOrthologic trianglesSign in to savetriangle geometryConnectionsmedial triangleEntitygeometryEntitytriangleEntitypointEntityperpendicularityEntityvertexEntityincircle and excircles of a triangleEntityorthocenterEntityconcurrent linesEntitypedal triangleEntitysymmetryEntityline–line intersectionEntityextouch triangleEntitytangential triangleEntityCategoriesTriangle geometry