If you ask this, you fail Octahedron
Octohedron, or diamond
six faces
A solid with four faces for maths is a tetrahedron.
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
Octahedron
A solid figure with eight vertices and all faces of equal size is called a cube. Each face of a cube is a square, and a cube has 8 vertices and 6 faces.
A pyramid
It is a regular octahedron.
If you ask this, you fail Octahedron
An octahedron is any solid shape with eight flat faces.
Octohedron, or diamond
An octahedron is a closed solid shape with eight polygonal faces.
Greek "octa-" = eight, "hedra" = seat or base.So it is a [solid] shape with eight bases or faces.
A quadrilateral based pyramid.
A Platonic solid is a solid all of whose face are regular and congruent polygons.There are five of these:A Tetrahedron. Four faces, each an equilateral triangle.Ad InfoA Hexahedron (Cube). Six faces, each a square.An Octahedron. Eight faces, each an equilateral triangle.A Dodecahedron. Twelve faces, each a regular pentagon.An Icosahedron. Twenty faces, each an equilateral triangle.
None.A hexagon is a plane figure. It has six sides but nofaces.Only three-dimensional (solid) objects have faces; for instance a hexagonal-based prism would have eight faces.