The name of a 7 sided polygon is Heptagon.
Heptagon
It is called a heptagon.
nonagon not even thats a 9 sided polygon its a hectogon
icosihenagon= 21-sided polygon icosihenagon= 21-sided polygon
The name of a 7 sided polygon is Heptagon.
A 7 sided polygon is called a Heptagon or a Septagon.
I would just call it an "800-sided polygon."
The name of a sided polygon is Octaconpentagon.
A seven sided polygon in called a heptagon.
The name of a 18 sided polygon is Octadecagon.
The name of a 11 sided polygon is Hendecagon.
The name of a 45 sided polygon is Tetraconpentagon.