An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. The only thing that all these have in common - a special feature - is that they have eight faces.
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. The characteristic that is shared by all octahedra and distinguishes them from other polyhedra is that they have eight faces.
Start with an octahedron in the form of a quadrilateral based dipyramid a regular octahedron is a special case of this). This shape has six vertices - chop these off so as to remove a quadrilateral based pyramid. You will be left with a truncated octahedron. It is an octahedron which has been truncated (shortened) by cutting off its extremities.
special features
they do not have special features
An octahedron has 8 sides.An octahedron is a polyhedron with eight plane faces.
An octahedron has eight faces. If it has 62 faces then it is not an octahedron!
An octahedron has 8 sides.
An octahedron has 18 corners.
a octahedron has 8 faces
They comprise the surfaces of an octahedron.
no there are no special features found on mars...
That it has no special features.