Groups and the symmetry operations | Crystal families |
| square, tetragonal, square oblique, square triclinic |
| tetragonal, square rectangle, (square oblique)-al |
| square oblique, (square oblique-)al |
| tetragonal, square rectangle, (square oblique)-al |
| square rectangle, square orthorhombic |
| square oblique, (square oblique)-al |
| square rectangle, square orthorhombic |
| monoclinic di squares, (monoclinic di squares)-al |
| triclinic square |
| triclinic square |
| (square oblique)-al |
| (square oblique)-al |
| (square oblique)-al |
| square orthorhombic |
| (monoclinic di squares)-al |
| (monoclinic di squares)-al |