EntityQ899720· pop 18· linked from 161 articlespoint groupSign in to savegroup of geometric symmetries (isometries) that keep at least one point fixedConnectionsCoxeter groupEntityCoxeter–Dynkin diagramEntityHong KongCitygeometryEntityInternational Standard Book NumberEntitysquareEntityrectangleEntitycrystalEntitycubeEntitypentagonEntitygroupEntityhexagonEntityyin and yangEntityfactorialEntitycrystallographyEntityequilateral triangleEntitytetrahedronEntitydeterminantEntityparityEntityprismEntityCategoriesCrystallographyEuclidean symmetriesGroup theoryMolecular geometry