A closed two-dimensional polygon bounded by nine straight-line segments. The formula with which to find an equilateral nonagon's area is 6.1818 times the length of one side squared. Also see mathematics, radial, shape, and vertex.

Glossary of Art Terms. 2014.

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  • Nonagon — Non a*gon, n. [L. nonus ninth + Gr. ? angle.] (Math.) A plane figure or polygon having nine sides and nine angles. [1913 Webster] …   The Collaborative International Dictionary of English

  • Nonagōn — (Nonagonum), das Neuneck …   Pierer's Universal-Lexikon

  • Nonagon — Nonagōn (grch.), Neuneck …   Kleines Konversations-Lexikon

  • nonagon — (n.) plane figure with nine sides, 1680s, a hybrid from L. nonus ninth (see NONES (Cf. nones)) + ending from PENTAGON (Cf. pentagon), etc …   Etymology dictionary

  • nonagon — nonàgōn m <G nonagóna> DEFINICIJA mat. deveterokut ETIMOLOGIJA v. nona + gon1 …   Hrvatski jezični portal

  • nonagon — ► NOUN ▪ a plane figure with nine straight sides and angles. DERIVATIVES nonagonal adjective …   English terms dictionary

  • nonagon — [nän′ə gän΄] n. [< L nonus, ninth (see NOON) + GON] a plane figure having nine angles and nine sides …   English World dictionary

  • Nonagon — Regular nonagon A regular nonagon Edges and vertices 9 Schläfli symbol {9} Coxeter–Dynkin diagram …   Wikipedia

  • Nonagon — regelmäßiges Neuneck Ein Neuneck (Nonagon, seltener: Enneagon) ist eine geometrische Figur. Es gehört zur Gruppe der Vielecke (Polygone). Es ist definiert durch neun Punkte. Dieser Artikel beschäftigt sich im Weiteren ausschließlich mit… …   Deutsch Wikipedia

  • nonagon — noun Etymology: Latin nonus ninth + English gon more at noon Date: circa 1639 a polygon of nine angles and nine sides …   New Collegiate Dictionary

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