Names of Polygons:

N - N-Gon
1 - Monogon
2 - Digon
3 - Trigon, Triangle
4 - Tetragon, Quadrilateral
5 - Pentagon
6 - Hexagon
7 - Heptagon
8 - Octagon
9 - Nonagon, Enneagon
10 - Decagon
11 - Hendecagon, Undecagon
12 - Dodecagon
13 - Triskagon, Triskaidecagon
14 - Tratagon, Tetradecagon, Tetrakaidecagon
15 - Pentadecagon, Pentakaidecagon
16 - Hexadecagon, Hexakaidecagon
17 - Heptakaidecagon
18 - Octakaidecagon
19 - Enneakaidecagon
20 - Icosagon
30 - Triacontagon
40 - Tetracontagon
50 - Pentacontagon
60 - Hexacontagon
70 - Heptacontagon
80 - Octacontagon
90 - Enneacontagon
100 - Hectogon, Hecatontagon
1000 - Chiliagon
10000 - Myriagon (from myriad, meaning 10,000)

Note: "kai" means "and"

Note: These have both Greek and Latin prefixes, if anyone has anything to add, please /msg Vos.

Pol"y*gon (?), n. [Gr. polygonal; many + angle: cf. F. polygone.] Geom.

A plane figure having many angles, and consequently many sides; esp., one whose perimeter consists of more than four sides; any figure having many angles.

Polygon of forces Mech., a polygonal figure, the sides of which, taken successively, represent, in length and direction, several forces acting simultaneously upon one point, so that the side necessary to complete the figure represents the resultant of those forces. Cf. Parallelogram of forces, under Parallelogram.

 

© Webster 1913.

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