An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. The number of faces at a vertex ranges from 3 to 7.
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An octahedron has eight faces. If it has 62 faces then it is not an octahedron!
An octahedron can have faces which are triangles, quadrilaterals, pentagons, hexagons or heptagons,
An octahedron has eight bases/faces.
An octahedron has 8 sides.
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