a pentagon.
A nine sided plane figure is a nonagon. A nine sided three dimensional figure is a nonahedron.
I would call it a 102-gon.
quadrilateral
hexagon
1200 sided figure is chiliadihectagon
A 17 sided figure is a heptadecagon.
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.
Well it has 9 sides and it is a figure.
It is a 9 sided figure
Nonagon
it is a Dodecagon
octogon
hexagon
icosikaihena
a pentagon.
a 9 sided shape is a nonagon