from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Plural form of nonagon.
Sorry, no etymologies found.
Origami can fold heptagons and nonagons relatively easily, although it meets its match with the 11-agon.
degree intervals, octagons at 45 degree intervals, nonagons at 40 degree intervals, decagons at 36 degree intervals, and dodecagons at 30 degree intervals.