Polygon Names 

have been proposed for the larger polygons, however these are not in common usage.

In this section, I give you the information on how Polygon Names are derived.  For the elementary student, naming larger polygons is not a curriculum requirement, however it can be a lot of fun for them!  Trying to get your tongue around some of these names will result in fits of giggles - guaranteed!

You can investigate the Regular Polygons  that are on the curriculum in more detail in this section.  





Polygon Names - Venture beyond the Octagon!

Typically we all know the polygon names up to Hexagon or perhaps Octagon, but what comes next?

 Is there actually a name for a 27 sided pentagon?  Yes there is.

The simple version (and the one most people use) is 27-gon.  But where is the tounge twisting fun in that? Doesn't Icosaheptagon sound so much more interesting!

My son has so much fun with these.  He is only six but he just loves to say the names in between fits of the giggles!

Below, you will find a complete list of Polygon names that are currently in use, and names that have been proposed.

Number of Sides

Name

 

N

N-gon

 

3

Triangle

4

Quadrilateral

5

Pentagon

6

Hexagon

7

Heptagon

8

Octagon

10

Decagon

12

Dodecagon

 

 

 

 

The following names for polygons have been proposed

9

Nonagon, Enneagon

11

Undecagon, Hendecagon

13

Tridecagon, Triskaidecagon

14

Tetradecagon, Tetrakaidecagon

15

Pentadecagon, Pentakaidecagon

16

Hexadecagon, Hexakaidecagon

17

Heptadecagon, Heptakaidecagon

18

Octadecagon, Octakaidecagon

19

Enneadecagon, Enneakaidecagon

20

Icosagon

30

Triacontagon

40

Tetracontagon

50

Pentacontagon

60

Hexacontagon

70

Heptacontagon

80

Octacontagon

90

Enneacontagon

100

Hectogon, Hecatontagon

1000

Chiliagon

10,000

Myriagon

 

 

I am sure you will find all the information and worksheets you need here, however if there is anything you cannot find please don't hesitate to contact me.

I love to hear from my readers, and with a little feedback and a few suggestions I can make this a great resource for parents, teachers and tutors alike.

Be sure to explore everything on this site starting at the home page.

Return from Pentagon Names to our Polygon Section.or Return from this page to K6 Geometric Shapes Home Page, to explore all the other great sections I have to offer.