It is quite acceptable to call them 11-agon 12-agon 13-agon ..... ect but what is more important is knowing how to work out their properties.
An 11 sided polygon is a hendecagon and a 12 sided polygon is a dodecagon
The name of a 12 sided polygon is Dodecagon.
The correct name for a 12 sided polygon is a dodecagon
Dodecagon.
A 12-sided polygon is called a dodecagon.
An 11 sided polygon is a hendecagon and a 12 sided polygon is a dodecagon
The name of a 12 sided polygon is Dodecagon.
The name of a 12 sided polygon is dodecagon.
The name of a 12 sided polygon is Dodecagon.
The name of a 12 sided polygon is Dodecagon.
The name of a 12 sided polygon is dodecagon.
The correct name for a 12 sided polygon is a dodecagon
The name of a 12 sided polygon is Dodecagon.
A dodecagon is a 12 sided polygon
A 12 sided polygon is a Dodecagon.
A 12 sided polygon is called a dodecagon.
the 12 side polygon is called dodecagon