Seven Crystal Systems
Cubic
-Lengths of the unit cell axes: All equal -Angles between the unit cell axes: all = 90
Tetragonal
-Lengths of the unit cell axes: 2 equal, 1 unequal -Angles between the unit cell axes: all = 90
Hexagonal
-Lengths of the unit cell axes: 3 equal, 1 unequal -Angles between the unit cell axes: 1 = 90, 3 = 60
Monoclinic
-Lengths of the unit cell axes: All unequal -Angles between the unit cell axes: 2 = 90, 1 =/ 90
Orthorhombic
-Lengths of the unit cell axes: All unequal -Angles between the unit cell axes: all = 90
Triclinic
-Lengths of the unit cell axes: All unequal -Angles between the unit cell axes: all =/ 90
Rhombohedral
-Lengths of the unit cell axes: all equal -Angles between the unit cell axes: all =/ 90