A shape with 8 faces is called an octahedron. An octahedron is a polyhedron with eight faces, each of which is an equilateral triangle. It is a three-dimensional shape that is commonly used in geometry and mathematics.
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The solid ( 3-dimensional) object with 8 faces is an OCTAHEDRON.
The shaape (2-dimensional) with 8 sides is an octagon.
A OctahedronThis shape has 8 faces.
Octagon. * * * * * An octagon is 2-dimensional. The regular 3-d shape (all faces the same) is the octahedron, but a hexagonal prism also has 8 faces.
The question is ambiguous. An octagon is a 2-dimensional shape with 8 edges and 8 vertices. Does a 3-D octagonal shape mean one with 8 edges or 8 faces or vertices, or faces which are 2d octagons?
octahedron - a polyhedron with 8 faces
octahedron