Minkowski Convex Body Theorem

A bounded plane convex region symmetric about a Lattice Point and with Area $>4$ must contain at least three Lattice Points in the interior. In $n$-D, the theorem can be generalized to a region with Area $>2^n$, which must contain at least three Lattice Points. The theorem can be derived from Blichfeldt's Theorem.

See also Blichfeldt's Theorem