A nonagon is a polygon with 9 sides
Draw a nine sided polygon.
a nonagon
repeat 3 [fd 250 rt 120]
nonagon
Because nonagon means 9 sides
In general, you cannot. If, in the unlikely event that it is a regular nonagon, you draw the perpendicular bisectors of any two sides. they will intersect at the centre. Join each of the vertices to the centre and you have the required division. This will not work for non-regular nonagons, which are the majority.
Not a regular nonagon.
A nonagon has nine sides.
A nonagon
"nonagon" is not a prefix.
Nonagon.