What do you call an eleven sided polygon?
Answers:
The preferred name is hendecagon, for linguistic reasons.
In geometry, a hendecagon is an 11-sided polygon. Undecagon is incorrect — the prefix is properly Greek, not Latin. A regular hendecagon has internal angles of 147.272727. degrees.
http://en.wikipedia.org/wiki/undecagon.
A hendecagon is an 11-sided polygon, also variously known as the undecagon or unidecagon. The term "hendecagon" is preferable to the other two since it uses the Greek prefix and suffix instead of mixing a Roman prefix and Greek suffix.
http://mathworld.wolfram.com/hendecagon..
Undecagon or hendecagon
I call it an eleven-gon. I don't think there is a real name for one.
an undecagon.
hendecagon
hendecagon
an elf
It can be referred to as a hendecagon or an 11-gon.
Cheers!
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