Pentadecagon actually, no, it is called a fifteen-gon, or fifteen-a-gon. anything more than 12(dodecagon) the name of the polygon is just the number of sides, and "gon" at the end.
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That shape is called a cylinder.That shape is called a cylinder.That shape is called a cylinder.That shape is called a cylinder.
a shape is called a shape in mathematics
A shape's sides are called faces.
A 10 sided shape is called a decagon
A nine sided shape is called a nonagon.