The Minkowski sum of two sets and in a vector space is given by .
The Minkowski sum of two disks centered at and with radii and , respectively, is given by the disk centered at with radius . The Minkowski sum of two balls is given similarly.
If and are polyhedra, then is a polyhedron and every extreme point of is the sum of an extreme point in and an extreme point in . For example, taking the Minkowski sums of the following pairs of Platonic solids in dual position but with unit edge lengths give the following polyhedra.
, | |
regular tetrahedron and regular tetrahedron | cuboctahedron |
cube and regular octahedron | small rhombicuboctahedron |
regular dodecahedron and regular icosahedron | small rhombicosidodecahedron |
The Minkowski sum operation is implemented in the Wolfram Language as RegionDilation.