Truncation (geometry)

Truncated square is a regular octagon: t{4} = {8} =

Truncated cube t{4,3} or

Truncated cubic honeycomb t{4,3,4} or

In geometry, a truncation is an operation in any dimension that cuts polytope vertices, creating a new facet in place of each vertex. The term originates from Kepler's names for the Archimedean solids.