Eleven.
Eleven.
The hendecagon is a polygon with eleven sides.
None.
a undecagon has eleven sides and angles.
There are 11 times 5 = 55 sides in 11 pentagons.
11 (eleven) I believe
An undecagon has eleven sides. That means that it has more sides than a decagon and fewer sides than a dodecagon.
a shape with eleven sides is called a undecagon
An eleven sided shape is called a hendecagon.
a heptagon is a shape with 11 sides!
Hendecagon or undecagon