A nonagon.
A 2D shape with 9 sides is called a Nonagon.
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A shape with nine sides is called a nonagon.
Nonagon
a shape with nine sides is called nonagon
It is called a nonagon.
A shape with 9 unequal sides would be called an irregular nonagon or an irregular enneagon.
nonagon
Nonagon.
It's Called a Nonagon.
nonagon
A shape with 9 sides, is a nonagon.