How do you make a 3D octahedron?

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โˆ™ 2009-11-10 19:36:43

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An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. The simplest octahedron to make is probably the heptagon based right pyramid. The net for this shape is a regular heptagon with seven identical triangles attached to its edges. If the triangles are folded to meet at a point above the heptagonal base you will have an octahedron.

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โˆ™ 2015-10-25 11:56:04
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Q: How do you make a 3D octahedron?
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