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An octahedron is a polyhedron with eight faces. A regular octahedron can be composed of eight equilateral triangles, four forming each half, and meeting in the middle at a square.

Imagine a pyramid, with a square base. Rising up from each edge is an equilateral triangle that meets the other four triangles at the apex. Now, turn the pyramid over and add four more triangles to the other side the same way. You now have an octahedron.

For more information, and a rotating picture, please see the related link below.

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The next of an octahedron looks like a series of 8 triangles.

In geometry, an octahedron is a polyhedron with eight sides. A regular octahedron is the dual polyhedron of a cube; It is a rectified tetrahedron.

The faces of octahedra are triangles.

It look like two square based pyramids stuck together on their square sides.

1. My house (really). 2. Another octahedron.

You start with a quadrilateral based bipyramid, which has six vertices. At each vertex, remove the tip in the form of a quadrilateral based pyramid. You will be left with a truncated octahedron.

An octahedron.An octahedron.An octahedron.An octahedron.

That's a really good question. It has several answers. You can put an octahedron through a square hole - just look at the octahedron point on.You can put an octahedron through a hole that's a regular hexagon - lay the octahedron down on a table on one of its triangles and look down on it and that's what you'll see.You can put an octahedron through a rhombus - to see that, look at it edge on. (This was the first answer posted to the question.)If you don't have a real octahedron to play with you can find one to rotate about with your mouse by visiting http://mathworld.wolfram.com/Octahedron.html

An octahedron.An octahedron.An octahedron.An octahedron.

look on youtube they explain it their name is i heart oragami

An octahedron is a closed solid shape with eight polygonal faces.

A weirdly cut jello?

An octahedron has eight faces. If it has 62 faces then it is not an octahedron!

An octahedron has 8 sides.An octahedron is a polyhedron with eight plane faces.

An octahedron has 8 sides.

An octahedron has 8 sides.

An octahedron has 18 corners.

They comprise the surfaces of an octahedron.

a octahedron has 8 faces

It is an octahedron in the form of a hexagonal prism.It is an octahedron in the form of a hexagonal prism.It is an octahedron in the form of a hexagonal prism.It is an octahedron in the form of a hexagonal prism.

An octahedron is a 3D shape with 8 sides.

An octahedron can have 6 to 12 vertices.

rectangle and octahedron

An octahedron has eight bases/faces.

An octahedron has eight faces - by definition.