Images for Mathematics

An octahedron

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A regular octahedron: there are 4 equilateral triangles around each vertex.
This polyhedron can be obtained by sectioning a hypercube with a 3-space perpendicular to the direction that joins two opposite vertices. See also another section along a parallel 3-space or the analogous phenomenon on the cube.

The image belongs to the sections...:
Images of the exhibition (From the exhibitions of matematita)
Sections of a hypercube (4D geometry)


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