Polygon Names

Side Name
n N-gon
3 triangle
4 quadrilateral
5 pentagon
6 hexagon
7 heptagon
8 octagon
9 enneagon
10 decagon
11 hendecagon
12 dodecagon
13 triskaidecagon
14 tetrakaidecagon (tetradecagon)
15 pentakaidecagon (pentadecagon)
16 hexakaidecagon (hexadecagon)
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


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