It is an octahedron. There are 257 topologically distinct octahedra: with 6 to 12 vertices.
icosahedron
Its a 17 faced 3d shape
A 12 sided 3D shape is a dodecahedron.
A Triangular Prism
Dodecahedron.
tetrahedron is a 4 faced 3d shape.
An 8-faced 3D shape is called an octahedron. It is a polyhedron with eight triangular faces, 12 edges, and six vertices.
It is an octahedron. There are 257 topologically distinct octahedra: with 6 to 12 vertices.
icosahedron
Its a 17 faced 3d shape
A six faced 3d shape is called a cube.
A 12 sided 3D shape is a dodecahedron.
A Triangular Prism
Decahedreon
It is a nonahedron.
It is important to learn and remember the name of 3D shapes. A 19 faced 3d shape is called a nonadecahedron.