Pentahectagon
11
Some examples are: 5 sided polygon is a pentagon, 6 sided polygon is an hexagon and an 8 sided polygon is an octagon
A 9 sided polygon is a Nonagon.
The name of a 18 sided polygon is Octadecagon.
I would just call it a 500-sided polygon.
Pentahectagon
There does not appear to be an accepted name for a 500 sided shape. Where a specific name does not exist for a polygon then it is usually referred to by the NUMBER of sides. A 500 sided polygon is referred to as a 500-gon.
Pentacentagon pentahectogon
a pentahectogonr / pentahectogon
11
Oh, dude, a 500-sided polygon is called a pentahectagon. It's like a regular polygon, but with 500 sides. So, if you ever need to impress someone with your knowledge of shapes, you can casually drop "pentahectagon" into the conversation. You're welcome.
One billion-sided polygon = GIGAGON
A five sided polygon is called a pentagon because pentagon means five sided polygon I think.
An 11 sided polygon is a hendecagon and a 12 sided polygon is a dodecagon
icosihenagon= 21-sided polygon icosihenagon= 21-sided polygon
The name of a 12 sided polygon is Dodecagon.