Tetrahedron - Wikipedia
网页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. [1]
TETRAHEDRON中文(简体)翻译：剑桥词典 - Cambridge Dictionary
网页The sliver is the only type of small volume tetrahedron whose circumradius over shortest edge length ratio does not grow with decreasing volume. We do not consider tetrahedra …
Tetrahedron - Meaning, Properties, Formulas | Tetrahedron …
网页A tetrahedron is a platonic solid which has 4 triangular faces, 6 edges, and 4 corners. It is also referred to as a ' Triangular Pyramid ' because the base of a tetrahedron is a triangle. A tetrahedron is different from a square pyramid, which has a square base.
Regular Tetrahedron -- from Wolfram MathWorld
网页The regular tetrahedron, often simply called "the" tetrahedron, is the Platonic solid with four polyhedron vertices, six polyhedron edges, and four equivalent equilateral triangular faces, 4 {3}. It is illustrated above together with a wireframe version and a …
Tetrahedron - Definition, Formulas, Examples, and Diagrams
网页2024年6月8日 · What is a Tetrahedron. The word ‘tetrahedron’ came from the Greek word ‘tetráedron’, meaning ‘triangle-based pyramid.’ ‘tetrás’ means ‘four’ and ‘hédra’ means ‘seat’. A regular tetrahedron is a three-dimensional shape with …
Tetrahedron -- from Wolfram MathWorld
网页If all faces are congruent, the tetrahedron is known as an isosceles tetrahedron. If all faces are congruent to an equilateral triangle, then the tetrahedron is known as a regular tetrahedron (although the term "tetrahedron" without further qualification is often used to mean "regular tetrahedron").
Tetrahedron, elementary geometry of the
网页2011年2月7日 · In addition, there are analogues to the Gauss and Bodenmiller theorems (cf. Gauss theorem; Bodenmiller theorem) for tetrahedra, see . An interesting result related to the edge-touching sphere of a tetrahedron is given in [a7] , whereby a question raised in elementary particle physics leads from the edge-touching sphere to Steiner's Rome surface ...
Tetrahedron - Polytope Wiki
网页The tetrahedron or tet, also sometimes called the 3-simplex, is the simplest possible non-degenerate polyhedron. The full symmetry version has 4 equilateral triangles as faces, joining 3 to a vertex, and is one of the 5 Platonic solids. …
Tetrahedron - Scientific Lib
网页A tetrahedron (plural: tetrahedra) is a polyhedron composed of four triangular faces, three of which meet at each vertex. A regular tetrahedron is one in which the four triangles are regular, or "equilateral," and is one of the Platonic solids.
Tetrahedron | Math Wiki - Fandom
网页A tetrahedron (plural: tetrahedra) is a polyhedron composed of four triangular faces, three of which meet at each vertex. A regular tetrahedron is one in which the four triangles are regular, or "equilateral", and is one of the Platonic solids.