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.