hexagon = 6 sides
heptagon = 7 sides
octagon = 8 sides
nonagon = 9 sides
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An irregular nonagon
A shape with 9 unequal sides would be called an irregular nonagon or an irregular enneagon.
In a regular nonagon there are 9, if its irregular its dependant.
First of all its not NANOGON its NONAGON......... A nonagon has 9 sides..
A nonagon has 9 sides and a decagon has 10 sides