An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. They can have faces which are triangles, quadrilaterals, pentagons, hexagons or heptagons.
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A regular octahedron is one of the platonic solids. Each of its faces is an equilateral triangle.
An octahedron has eight faces. If it has 62 faces then it is not an octahedron!
equilateral triangle
yes it is called a octahedron
If the die is a regular octahedron, then the probability for each face is 1/8.