digon
/ˈdaɪɡən/
noun 3
Definitions
noun
1
A polygon having two edges and two vertices.
They [the students] also came upon new and unusual mathematical figures: the digon, a two-sided polygon on a spherical space, and the apeirogon, an open polygon with infinitely many sides […]. All these discoveries brought up even more questions. Is a circle a polygon? What makes an octagon an octagon – its eight vertices, its eight sides, or both? Can a polygon cross itself? Does a polygon need to be closed?
2
A pair of parallel undirected edges in a multigraph.
3
A pair of antiparallel edges in a directed graph.
Your note
not saved0 chars