Crystal Systems - Chem

perfect cube

Isometric

cube with 2 equal sides

tetragonal

cube with no equal sides

orthorhombic

3D figure with hexagon face (6 sides)

hexagonal

3D figure with rhombus face (all sides are equal)

Rhombohedral

rhombus looking faces with a 90 degree angle

monoclinic

3D structure with rhombus faces but NO 90 degree angle

triclinic

Isometric

a=b=c

α=β=γ=90^o

tetragonal

a=b≠c

α=β=γ=90^o

orthorhomic

a≠b≠c

α=β=γ=90^o

Hexagonal

a=b≠c

α=β=90^o

γ=120^o

Rhombohedral

a=b=c

α=β=γ≠90^o

monoclinic

a≠b≠c

α=β=90^o≠y

triclinic

a≠b≠c

α≠β≠y≠90^o