The name of a 10 sided polygon is Decagon.
I would just call it a 500-sided polygon.
The name of a 14 sided polygon is Tetradecagon.
One billion-sided polygon = GIGAGON
Octacontakaioctagon.
A 57-sided polygon would be called a pentacontaheptagon.(see related link for naming)
Using systematic polygon names, a 57-sided regular polygon would be called a pentacontakaiheptagon.
It is a pyramid with a 57 sided polygon as base.
icosihenagon= 21-sided polygon icosihenagon= 21-sided polygon
I would just call it an "800-sided polygon."
The name of a sided polygon is Octaconpentagon.
The name of a 18 sided polygon is Octadecagon.
The name of a 45 sided polygon is Tetraconpentagon.
The name of a 7 sided polygon is Heptagon.
The name of a 10 sided polygon is Decagon.
The name of a 8 sided polygon is Octagon.
The name of a 33 sided polygon is riacontakaitrigon.