Because the words we use are derived from a time when people used base twelve rather than base ten. Also the reason for "dozen" & "gross".
It goes back about 500 years or so.
It is a hendecahedron.
Hendecagon is 11. Dodecagon is 12.
It is 11,12,111
Eleven and eleven thousandths.
eleven thousand eleven hundred and eleven rupees is written as : Rs. 11,111.
An eleven sided shape is called a hendecagon.
They are called hendecagons.
Finger Eleven has 5 albums, they have one called Tip, one called Finger Eleven, one called The Greyest of Blue Skies, one called Them Vs You Vs Me, and one called life Turns Electic
It was called Apollo Eleven.
a shape with eleven sides is called a undecagon
hendecagon
hendecagon
There were eleven
They are called endecagons or hendecagons.
It is called a hendecagon.
straned
It is called a hendecagon, undecagon