I would just call it a 500-sided polygon.
The name of a 10 sided polygon is Decagon.
A 10-sided polygon is a decagon.
A ten-sided polygon is called a decagon.
The name of a 5 sided polygon is Pentagon.
The name of a 10 sided polygon is Decagon.
Pentacentagon pentahectogon
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.
a 500 sided polygon is call a Pentahectagon... i believe
The name of a 12 sided polygon is Dodecagon.
name of 4000 sided polygon
A 8 sided polygon is called a octagon.
Pentahectagon
The name of a 10 sided polygon is Decagon.
The name of a 19 sided polygon is enneadecagon.
The name of a 9 sided polygon is Nonagon.
The name of a 15 sided polygon is Pentadecagon.
The name of a 7 sided polygon is Heptagon.