A pentadecagon. But I prefer 15-gon since it is obvious what that means - without reference to a dictionary.
The name of a 15 sided polygon is Pentadecagon.
icosihenagon= 21-sided polygon icosihenagon= 21-sided polygon
A 15-sided polygon is called a pentadecagon or a pentakaidecagon.
The name of a 15 sided polygon is Pentadecagon.
I would just call it an "800-sided polygon."
The name of a 15 sided polygon is Pentadecagon.
icosihenagon= 21-sided polygon icosihenagon= 21-sided polygon
A 15-sided polygon is called a pentadecagon or a pentakaidecagon.
The name of a 15 sided polygon is Pentadecagon.
There are 90 diagonals in a 15-sided polygon.
I would just call it an "800-sided polygon."
The name of a sided polygon is Octaconpentagon.
A 15 sided polygon can be called either a pentadecagon or a quindecagon.
A pentadecagon. Although I prefer 15-gon since it is obvious what that means!
The name of a 18 sided polygon is Octadecagon.
The name of a 11 sided polygon is Hendecagon.
The name of a 8 sided polygon is Octagon.