Noun
digon (plural digons)
- (geometry) A polygon having two edges and two vertices.
- Synonyms: biangle, bigon, (less common) diangle
2013, Brent Davis, Moshe Renert, chapter 6, in The Math Teachers Know: Profound Understanding of Emergent Mathematics, New York, N.Y., Abingdon, Oxfordshire: Routledge, →ISBN, page 102: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?
- (graph theory)
- A pair of parallel undirected edges in a multigraph.
- A pair of antiparallel edges in a directed graph.
Translations
polygon having two edges and two vertices
- Basque: digono
- Belarusian: двухвугольнік (dvuxvuhólʹnik)
- Bengali: দ্বিভুজ (bn) (dibhuj)
- Chinese:
- Mandarin: 二角形 (èrjiǎoxíng)
- Dutch: tweehoek (nl) m
- Esperanto: dulatero
- Finnish: kaksikulmio
- French: digone (fr) m
- German: Kugelzweieck n, sphärisches Zweieck n, Zweieck n, Kugelzweiseit m, Zwickel (de) m
- Hindi: डाइगोन (ḍāigon)
- Hungarian: kétszög
- Icelandic: tvíhyrningur m
- Interlingua: fuso
- Japanese: 二角形 (にかくかた, nikakukata)
- Korean: 이각형 (igakhyeong)
- Kurdish:
- Central Kurdish: دوولا (dûla)
- Lao: ຮູບສອງແຈ (hūp sǭng chǣ)
- Macedonian: двоаголник m (dvoagolnik)
- Norwegian:
- Bokmål: sfærisk tokant
- Polish: dwukąt m
- Russian: двуугольник (ru) m (dvuugolʹnik)
- Slovene: dvókótnik
- Spanish: dígono m
- Thai: รูปสองเหลี่ยม
- Ukrainian: дигон (dyhon), двокутник (dvokutnyk)
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pair of parallel undirected edges in a multigraph
pair of antiparallel edges in a directed graph
Etymology
Deverbal from digoni (“to be able, to suffice”).
Mutation
More information Welsh mutation, radical ...
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References
- R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “digon”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies