This article is about (n − 2)-dimensional element of an n-dimensional polytope. For ridge curves on smooth surfaces in 3D, see Ridge (differential geometry).
In geometry, a ridge is an (n − 2)-dimensional element of an n-dimensional polytope. It is also sometimes called a subfacet for having one lower dimension than a facet.
By dimension, this corresponds to:
- a vertex of a polygon;
- an edge of a polyhedron;
- a face of a polychoron (4-polytope);
- a cell of a 5-polytope;
- a 4-face of a 6-polytope;
- and so forth.
Exactly two facets meet at any ridge in a polytope.
See also
 |
This geometry-related article is a stub. You can help Wikipedia by expanding it. |
External links
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
