Question

What is a 11 , 20 and 40
sided polygon called​

Answer 1

Answer:

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"

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Answer 2

Answer:

Sides Name

9 Nonagon, Enneagon

11 Undecagon, Hendecagon

13 Tridecagon, Triskaidecagon

14 Tetradecagon, Tetrakaidecagon