Für mehr Details siehe Elementare Geometrie des reguläre Tetraeders.
Aus der Seitenlänge " Side_a " eines regulären Tetraeders kann man den Radius der Umkugel (berührt alle Eckpunkte / Scheitel) berechnen:
www.f-lohmueller.deFor more Details see Elementary Geometry on Regular Tetrahedron.
For a regular tetrahedron we can calculate from the side " Side_a " the radius of the circumsphere:
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