Sudev Gandhi

What do you call an 11-sided polygon? A 14-sided polygon? Can you give me a list of names of polygons?This answer represents excerpts from contributions made by Prof. John Conway of Princeton University to the geometry.college and geometry.pre-college newsgroups. For an etymological discussion in the Dr. Math archive, see "Naming Polygons." When naming polygons, for the "numerical" part of the name, we use the Greek prefixes: mono, di, tri, tetra, penta, hexa, hepta, octa, ennea, 1 2 3 4 5 6 7 8 9 deca, hendeca, dodeca, triskaideca, tetrakaideca, ..., enneakaideca, 10 11 12 13 14 19 icosa, icosikaihena, icosikaidi, icosikaitri, ..., icosikaiennea, 20 21 22 23 29 triaconta, triacontakaihena, ..., triacontakaiennea, tetraconta, ..., 30 31 39 40 pentaconta, hexaconta, heptaconta, octaconta, enneaconta, hecta 50 60 70 80 90 100 Prof. Conway writes: Antreas Hatzipolakis and I worked out a complete system up to the millions from which this is taken, and which has also bee...