A one-dimensional line segment where two two-dimensional faces of an -dimensional polytope meet, also called a side.
Polytope Edge
See also
Polygon Edge, Polyhedron EdgeExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Polytope Edge." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/PolytopeEdge.html