An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. An octahedron has 8 faces (as the name implies). It can have 6 to 12 vertices and 12 to 18 edges.
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An octahedron has eight faces. If it has 62 faces then it is not an octahedron!
An octahedron has8 faces, 12 to 18 edges and 6 to 12 edges.
The prefix octa- means eight. So, a octahedron will have 8 faces. It also has 12 edges and 6 vertices.
Faces = 8Edges = 12 to 18 Vertices= 6 to 12.
It depends on the exact shape. An octahedron is a shape with eight faces. It can be a heptagonal pyramid (8 vertices, 14 edges), or a hexagonal prism (12 vertices, 18 edges), square dipyramid (6 vertices, 12 edges) are some examples. There are more.