Flag (geometry)

For a comparable but different concept of linear algebra, see flag manifold. In geometry a flag is a connected set of elements from each dimensionality of a polygon, polyhedron, or higher polytope.For example a flag of a polygon comprises one corner and one connecting side. A flag of a polyhedron comprises one vertex, one connected edge and one connected face.A regular polygon, polyhedron, or higher polytope is transitive on its flags.
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