A nine-sided object is known as a nonagon.
Enneagon ( if its a polygon)
it is called a nonagon.
nonagon- nine-sided polygon
A nine sided polygon is called a "nonagon"
There is no such thing as a two-sided object.
a nonagon is the name given to a nine sided polygon
A six-sided object is called a hexagon.
A 2d nine sided shape is called a nonagon.
A nine sided plane figure is a nonagon. A nine sided three dimensional figure is a nonahedron.
Either a nonagon or an enneagon. Whichever floats your boat.
A nine sided POLYGON is called a nonagon. Any plain shape bounded by nine straight sides is a nonagon.