For any tetrahedron there exists a sphere (called the circumsphere) on which all four vertices lie, and another sphere (the insphere) tangent to the tetrahedron's faces.

citation

Wikipedia contributors. (2024, February 2). Tetrahedron. In Wikipedia, The Free Encyclopedia. Retrieved March 7, 2024, from https://en.wikipedia.org/w/index.php?title=Tetrahedron&oldid=1202240527

random

Epsilon Scorpii (stars.astro.illinois.edu) EPSILON SCO (Epsilon Scorpii). Though bright, second magnitude (2.29), in most other constellations Epsilon Sco would have a prominent place and probably a proper name. Here, in one of the grandest patterns of the sky, Scorpius, it has neither.

snippet of

Tetrahedron (Wikipedia) In geometry, a tetrahedron (pl.: tetrahedra or tetrahedrons), also known as a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertices. The tetrahedron is the simplest of all the ordinary convex polyhedra.

sphere of

tetrahedron

tags