a polygon
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An 11 sided shape is an Eptogon
A nine sided shape or polygon is called a nonagon.
Why not just call it "a 130-sided shape"? because its not called that, spaz.
A five sided geometric shape is called a pentagon.
A 13 sided shape is a tridecagon or tristedecagon. The roots to this word are tri (meaning 3) and dec (meaning ten). 3 + 10 = 13.