What is a shape with 12 sides called?

Answer 1

If it's a 2-dimensional shape, like lines drawn on paper, a 12 sided shape is called a dodecagon. If it's 3-dimensional, like a 12-sided die, then it's called a dodecahedron.
dodecagon

Answer 2

I think it is called a dodecagon.

Answer 3

It is a dodecagon.