EntityQ3412598· pop 12· linked from 69 articlescomplete quadrangleSign in to savefour points that determine six distinct linesConnectionsplaneEntitycollinearityEntitySteiner systemEntityconfigurationEntityAlexander BogomolnyEntitymathematicsEntityIsaac NewtonPersonInternational Standard Book NumberEntitylineEntitypointEntityquadrilateralEntitydigital object identifierEntityCornell UniversityEntityInternet ArchiveEntityline segmentEntityFelix KleinEntitytangentEntityprojective geometryEntityMathWorldEntitydesign of experimentsEntityCategoriesConfigurations (geometry)Projective geometryTypes of quadrilaterals