Images for Mathematics

A regular tetrahedron

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A regular tetrahedron, made of 4 triangles. You can see a net. How many triangles do we need to make a regular tetrahedron of double side?

The image belongs to the sections...:
Models of polyhedra (3D geometry)
Puzzles involving reconstruction of polyhedra (3D geometry)
Tetrahedron (3D geometry)


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Matematita