dont no!
Nonagon
a shape with nine sides is called nonagon
No not just any shape that has 8 side can be called an octagon. An octagon has straight lines that make up a closed bounded shape.
You cannot have a quadrant (a quarter) in a shape that is divided into 9 parts!
The 9-side shape
you call it a edge
A hexagon
An octagon.
The answer is Tetradeecagon.
dont no!
A nonagon
nonagon
a 9 sided shape is a nonagon
That's a septagon.
I guess 13 angle shape
Nonagon