digon
Definition from Wiktionary, the free dictionary
Contents
English[edit]
Etymology[edit]
Pronunciation[edit]
 Hyphenation: di‧gon
Noun[edit]
digon (plural digons)
 (geometry) A polygon having two edges and two vertices.

2013, Brent Davis; Moshe Renert, The Math Teachers Know: Profound Understanding of Emergent Mathematics, New York, N.Y.; Abingdon, Oxon.: Routledge, ISBN 9781415858434 Invalid ISBN, page 102:
 They [the students] also came upon new and unusual mathematical figures: the digon, a twosided 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?

 (graph theory) A pair of parallel undirected edges in a multigraph.
 (graph theory) A pair of antiparallel edges in a directed graph.
Synonyms[edit]
 bigon (less common)
Translations[edit]
Further reading[edit]
Anagrams[edit]
Esperanto[edit]
Noun[edit]
digon
 accusative singular of digo
Welsh[edit]
Etymology[edit]
Pronunciation[edit]
Adverb[edit]
digon
Mutation[edit]
Welsh mutation  

radical  soft  nasal  aspirate 
digon  ddigon  nigon  unchanged 
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs. 