EntityQ1888119· pop 17· linked from 81 articlestrilinear coordinatesSign in to savecoordinate system based on a triangleConnectionsincircle and excircles of a triangleEntityaltitudeEntitybisectionEntitycircumscribed circle for triangleEntitygeometryEntitytriangleEntitydistanceEntityEuclidean vectorEntityCornell UniversityEntitytrigonometric functionEntityconic sectionEntityCartesian coordinate systemEntitydeterminantEntitycenter of massEntityvertexEntitymedianEntity𝑛-tupleEntityMathWorldEntitycentroidEntityViviani's theoremEntityCategoriesAffine geometryCoordinate systemsLinear algebraTriangle geometry