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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References

References

★ Peter R. Cromwell, ''Polyhedra'', Cambridge University Press 1997, ISBN 9-521-55432-2