It's still just a dodecahedron, and dodecahedrons are normally 3D
dodecahedron
Dodecahedron
dodecahedron
A dodecahedron is a 3D shape but it's 2D shape is a dodecagon.
Dodecahedron
A dodecahedron.
That is a Dodecahedron.
A 12 sided 3D shape is a dodecahedron.
12 (a dodecahedron)
A dodecahedron
If you mean the regular polyhedra, they are: tetrahedron, cube (or hexahedron), octahedron, dodecahedron, icosahedron, (Plato's 50) plus: small stellated dodecahedron, great stellated dodecahedron, great dodecahedron, great icosahedron for 9. Maybe a sphere is a perfect curved 3D figure.
A 12 sided 3D shape is called a dodecahedron.