From Greek duo "two" + deka "ten" + gonia . You can understand why a hexagon is called a hexagon using the same idea. Hex referring to 6 and gonia again. Now how about a nonagon. Nope, not greek, it comes from the latin word for 9 which is nonus. So it does not always work.
A twelve sided shape is a dodecagon.
a twelve sided shape is called a dodecagon.
dodecagon
A 12 sided figure is called a dodecagon. A 3-dimensional shape with 12 faces is called a dodecahedron.
A twelve sided polygon is called a dodecagon.
A twelve sided shape is a dodecagon.
A 12 sided shape is called a dodecagon.
a twelve sided shape is called a dodecagon.
A twelve-sided plane figure is called a dodecagon.
Dodecagon
It is a dodecagon
dodecagon
A twelve-sided polygon is called a dodecagon.
A 12 sided figure is called a dodecagon. A 3-dimensional shape with 12 faces is called a dodecahedron.
A twelve sided polygon is called a dodecagon.
It is called a dodecagon.
A twelve sided polygon is called a dodecagon.