Provided we are talking about a 2D figure with straight sides, it is an octadecagon.
An eighteen sided shape is called a Octadecagon, or a Octakaidecagon.
The name of a tweleve sided shape is a dodecagon.
a twelve sided shape is called a dodecagon.
A Tetracontakaitetragon is a forty - five sided shape ...
The name of an eleven sided geometric shape is a Hendecagon or endecagon.
An eighteen sided shape is called a Octadecagon, or a Octakaidecagon.
An eighteen-sided shape is called an octakaidecagon, or octadecagon.
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.
18-gon
The name of a tweleve sided shape is a dodecagon.
Decagon. A decagon is the name of a ten sided shape.
A 10-sided shape is a decagon.
icosikaidigon is a 22 sided shape
A Pentacontagon is a fifty sided shape ...
A hexahedron is the name for a 6 sided 3D shape.
A 14 sided shape is called a Tetradecagon.
hundred sided shape is called a chlligon