regular tetrahedron


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regular tetrahedron

[′reg·yə·lər ‚te·trə′hē·drən]
(mathematics)
A regular polyhedron of four faces.
References in periodicals archive ?
Simple and Rational: The Regular Tetrahedron and the Cube
What is the number of faces of a regular tetrahedron?
Using the trace inequality for a regular tetrahedron from Lemma A.3, we get
How many faces, including the base, does a regular tetrahedron have?
For example, for the regular tetrahedron, the angle defect is (in degrees) is:
To illustrate this point, Jet us consider a regular tetrahedron inscribed in a sphere of unit radius in [E.sup.3].
Hoagland, however, inserts a circumscribed regular tetrahedron (related, he claimed, to internal planet dynamics) inside Mars with one corner at Olympus Mons.