An octahedron.
A heptagonal pyramid or a hexagonal prism or two quadrilateral pyramids attached at their bases. There are probably other configurations as well.
Chat with our AI personalities
If you ask this, you fail Octahedron
Octohedron, or diamond
six faces
In geometry, an octahedron (plural: octahedra) is a polyhedron with eight faces. A regular octahedron is a Platonic solid composed of eight equilateral triangles, four of which meet at each vertex.It is a 3-dimensional cross polytope (shape).---Wikipedia
A solid with four faces for maths is a tetrahedron.