Truncate[expr] truncates each edge of each polygon in graphics expression expr.Truncate[expr, ratio] truncates to the specified ratio of the edge length.

BSplineSurface[array] is a graphics primitive that represents a non-uniform rational B-spline surface defined by an array of x, y, z control points.

Decagon is a regular polygon with ten edges, for use with polytope functions.

Digon is a regular polygon with two edges, for use with polytope functions.

Dodecagon is a regular polygon with twelve edges, for use with polytope functions.

Heptagon is a regular polygon with seven edges, for use with polytope functions.

Hexagon is a regular polygon with six edges, for use with polytope functions.

Nonagon is a regular polygon with nine edges, for use with polytope functions.

Octagon is a regular polygon with eight edges, for use with polytope functions.

Pentagon is a regular polygon with five edges, for use with polytope functions.