If it's a polygon, then it's a heptdecagon.
See the University of Regina Related Link, below, for a list.
The name of a tweleve sided shape is a dodecagon.
It depends on what information you have about the shape.
Shapes with 12 to 20 sides are named as follows: a 12-sided shape is called a dodecagon, a 13-sided shape is a triskaidecagon, a 14-sided shape is a tetradecagon, a 15-sided shape is a pentadecagon, a 16-sided shape is a hexadecagon, a 17-sided shape is a heptadecagon, an 18-sided shape is an octadecagon, a 19-sided shape is a nonadecagon, and a 20-sided shape is an icosagon.
a twelve sided shape is called a dodecagon.
A Tetracontakaitetragon is a forty - five sided shape ...
Heptadecagon or a Heptakaidecagon
heptadecagon is a 17 sided 2d shape
The name for a 57 sided shape is derived by combining the name for a 50 sided shape with the name for a 7 sided shape. A 57 sided shape is called a pentacontaheptagon.
17
A 17-gon
The name of a tweleve sided shape is a dodecagon.
Decagon. A decagon is the name of a ten sided shape.
It depends on what information you have about the shape.
A 10-sided shape is a decagon.
icosikaidigon is a 22 sided shape
A Pentacontagon is a fifty sided shape ...
heptadecadon