It is called a nonagon. There currently is no official name for a nine-sided polygon. However, two names have been proposed for such a figure: the first is a Nonagon; the second is an Enneagon.
1200 sided figure is chiliadihectagon
Nonagon
it is a Dodecagon
icosagon icosagon
A Pentagon. A five sided figure is a pentagon
Nonagon.
A 17 sided figure is a heptadecagon.
1200 sided figure is chiliadihectagon
It is a 9 sided figure
Well it has 9 sides and it is a figure.
Nonagon
it is a Dodecagon
icosikaihena
octogon
hexagon
a pentagon.
a 9 sided shape is a nonagon