undecagon

un·de·ca·gon
U1N1D2E1C3A1G2O1N1

noun

A polygon with eleven sides and eleven angles.

Similar
11-gonhendecagon
Scrabble 13
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Meanings

nounundecagon (plural undecagons)

plural undecagons

  1. geometryA polygon with eleven sides and eleven angles.

    Synonyms: 11-gon, hendecagon

Synonyms & antonyms

nounA polygon with eleven sides and eleven angles.

Similar
11-gonhendecagon
Also see
hendecagon

Origin

From undeca- + -gon.

Full word history & related roots →
Cite this entry
APA

undecagon. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/undecagon

MLA

“undecagon.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/undecagon. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “undecagon,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/undecagon.

Source: undecagon on Wiktionary, CC BY-SA 4.0.