An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. The number of diagonals will depend on the precise shape.
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An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. The number of diagonals will depend on which one of the 257 octahedra you have in mind.
An octahedron has eight bases/faces.
An octahedron has eight faces. If it has 62 faces then it is not an octahedron!
An octahedron has 7 perpendicular lines.
An octahedron has 8 sides.