Plane and Solid Geometry - Name of Polygons

Number of sides of Quadrilateral/tetragon

4

Number of sides of Pentagon

5

Number of sides of Hexagon

6

Number of sides of Heptagon/septagon

7

Number of sides of Octagon

8

Number of sides of Nonagon/enneagon

9

Number of sides of Decagon

10

Number of sides of Undecagon/hendecagon

11

Number of sides of Dodecagon

12

Number of sides of Tridecagon/Triskaidecagon

13

Number of sides of Tetradecagon/Tetrakaidecagon

14

Number of sides of Pentadecagon/Quindecagon

15

Number of sides of Hexadecagon/Hexakaidecagon

16

Number of sides of Heptadecagon

17

Number of sides of Octadecagon/Octakaidecagon

18

Number of sides of Enneadecagon/Enneakaidecagon

19

Number of sides of Icosagon

20

Number of sides of Triacontagon

30

Number of sides of Tetracontagon

40

Number of sides of Pentacontagon

50

Number of sides of Hexacontagon

60

Number of sides of Heptacontagon

70

Number of sides of Octacontagon

80

Number of sides of Enneacontagon

90

Number of sides of Hectagon

100

Number of sides of Chilliagon

1,000

Number of sides of Myriagon

10,000