A regular polyhedron is inscribed in a sphere and all its faces are congruent regular polygons (A regular polygon has all sides congruent and all angles are the same measure).
Solid commonly called Platonic solids.
It consists of four faces are equilateral triangles. It has 4 vertices and 6 edges. It has 3 edges at each vertex.
In Greek, it was the symbol of fire.
If you want to learn OpenSCAD you can follow these video tutorials :
http://www.thingiverse.com/thing:656880
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| Angle-tetrahedron-tetraedre-Impression-3D-Caen-Rudy-Ruffel.stl | 1.2MB |
