### Definition of Nonagon

1. Noun. A nine-sided polygon.

Generic synonyms: Polygon, Polygonal Shape

### Definition of Nonagon

1. n. A figure or polygon having nine sides and nine angles.

### Definition of Nonagon

1. Noun. (geometry) A polygon with nine sides and nine angles. ¹

¹ Source: wiktionary.com

### Definition of Nonagon

1. a nine-sided polygon [n -S]

### Medical Definition of Nonagon

1. A figure or polygon having nine sides and nine angles. Origin: L. Nonus ninth + Gr. Angle. Source: Websters Dictionary (01 Mar 1998)

### Nonagon Pictures

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### Lexicographical Neighbors of Nonagon

 nonagendanonagesnonagesimalnonagesimalsnonagglutinativenonaggregatednonaggregatingnonaggressionnonaggressionsnonaggressive nonaggressivelynonaggressornonaggressorsnonagingnonagnosticnonagon (current term)nonagonalnonagonisticnonagonsnonagostic nonagoutinonagrariannonagreednonagreeingnonagreementnonagreementsnonagriannonagriansnonagriculturalnonahedron

### Literary usage of Nonagon

Below you will find example usage of this term as found in modern and/or classical literature:

1. Primary Object Lessons: For Training the Senses and Developing the Faculties by Norman Allison Calkins (1898)
"Then nonagon is a plane figure having nine angles. A form with nine equal sides is a regular nonagon. Decagon.—You may count the angles on this form. ..."

2. T. Sundara Row's Geometric Exercises in Paper Folding by Tandalam Sundara Rao (1901)
"THE nonagon. 96. Any angle can be trisected fairly accurately by paper folding, and in this way we may construct approximately the regular nonagon. Fig. ..."

3. American Edition of the British Encyclopedia: Or, Dictionary of Arts and ...by William Nicholson by William Nicholson (1821)
"nonagon, in mathematics, a figure having nine sides and angles. In a regular nonagon, or that the sides and angles of which are equal, if each side be 1, ..."

4. The Elements of Geometry by George Bruce Halsted (1886)
"... one of five sides is a Pentagon; one of six sides is a Hexagon; one of seven sides is a Heptagon; one of eight, an Octagon; of nine, a nonagon; of ten, ..."

5. A Treatise on Land-surveying: In Seven Parts by Thomas Dix (1802)
"To inscribe a nonagon, in a given circle. AE With the radius of the circle, and A as a centre, describe the arc E F. Divide the arc EAF, into three equal ..."