digon
EnglishEdit
EtymologyEdit
PronunciationEdit
NounEdit
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 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.
SynonymsEdit
TranslationsEdit
polygon having two edges and two vertices


Further readingEdit
AnagramsEdit
EsperantoEdit
NounEdit
digon
 accusative singular of digo
WelshEdit
EtymologyEdit
Perhaps ultimately from ProtoIndoEuropean *h₁én (“produce”).^{[1]}
PronunciationEdit
NounEdit
digon m (uncountable)
 enough, plenty, a sufficient amount
Derived termsEdit
 digonol (“adequate”)
AdverbEdit
digon
MutationEdit
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. 
ReferencesEdit
 ^ J. Morris Jones, A Welsh Grammar, Historical and Comparative (Oxford 1913), § 196 ii (5).