A nonagon may be regular or irregular.
Not a regular nonagon.
A irregular nonagon is a polygon that is not a regular polygon.
It is a plane area in the shape of a nonagon!
A nine sided nonagon is only a regular shape if it has 9 equal sides
It is a nonagon. It need not be a regular nonagon.
In a regular nonagon no two sides are parallel.
A regular nonagon.
In a regular nonagon there are 9, if its irregular its dependant.
Each angle for a regular nonagon is 140 degrees each.
A regular nonagon with 9 sides has a rotational symmetry of 9.
A regular nonagon has 9 obtuse angles of 140 degrees