&sq=&lang=&file=File:Regular_polygon_truncation_4_1.svg) Truncated square is a regular octagon: t{4} = {8}   =  
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&sq=&lang=&file=File:Truncated_hexahedron.png) Truncated cube t{4,3} or 
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&sq=&lang=&file=File:Truncated_cubic_honeycomb1.jpg) Truncated cubic honeycomb t{4,3,4} or
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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.