Question

Wht is a 11 sided polygon called ?​

Answer 1

hendecagon
In geometry, a hendecagon (also undecagon or endecagon) or 11-gon is an eleven-sided polygon. (The name hendecagon, from Greek hendeka "eleven" and –gon "corner", is often preferred to the hybrid undecagon, whose first part is formed from Latin undecim "eleven".)

Answer 2

Here is your answer

Hendecagon

Hope this helps you