Primitive Bravais Lattices

Angles and Lengths of the 14 Bravais Lattices

Cubic

a = b = c; α = β = γ = 90°

Tetragonal

a = b ≠ c; α = β = γ = 90°

Orthorhombic

a ≠ b ≠ c; α = β = γ = 90°

Hexagonal

a = b ≠ c; α = β = 90°, γ = 120°

Trigonal

a = b = c; α = β = γ ≠ 90°

Monoclinic

a ≠ b ≠ c; α = γ = 90°, β ≠ 120°

Triclinic

a ≠ b ≠ c; α ≠ β ≠ γ ≠ 90°