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tetrahedron 音标拼音: [t,ɛtrəh'idrən]

XDict

n. 四面体

PyDict

四面体

Taiwan MOE computer dictionary (moecomp)

tetrahedron
四面体

WordNet (r) 3.0 (2006) (WordNet)

tetrahedron
n 1: any polyhedron having four plane faces

The Collaborative International Dictionary of English v.0.48 (gcide)

Tetrahedron \Tet`ra*he"dron\, n. [Tetra- Gr. ? seat, base, fr.
? to sit.] (Geom.)
A solid figure inclosed or bounded by four triangles.
[1913 Webster]

Note: In crystallography, the regular tetrahedron is regarded
as the hemihedral form of the regular octahedron.
[1913 Webster]

{Regular tetrahedron} (Geom.), a solid bounded by four equal
equilateral triangles; one of the five regular solids.
[1913 Webster]

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英文字典中文字典相关资料:

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 [1]
Tetrahedron | Journal | ScienceDirect. com by Elsevier
Read the latest articles of Tetrahedron at ScienceDirect com, Elsevier’s leading platform of peer-reviewed scholarly literature
Tetrahedron - Definition, Formulas, Examples, and Diagrams
What is a tetrahedron Learn how to find its surface area and volume with formulas, solved examples, and diagrams
Regular tetrahedron - Wikipedia
A regular tetrahedron is a tetrahedron (that is, a four-sided polyhedron) in which all four faces are equilateral triangles In other words, all of its faces are the same size and shape (congruent), and all edges are the same length
Tetrahedron | geometry | Britannica
A tetrahedron is a geometric solid with four faces It is the simplest type of polyhedron, which is a three-dimensional object made of polygonal surfaces The faces of a tetrahedron are typically triangles 1 2
Tetrahedron - Simple English Wikipedia, the free encyclopedia
Tetrahedron A rotating tetrahedron A tetrahedron or triangular pyramid is a polyhedron (a three-dimensional shape) It has four corners and six edges All four of its faces are equilateral triangles Every two edges meet on one of those corners forming a sixty-degree angle
Spinning Tetrahedron - Math is Fun
It has a triangle for a base and three more triangles for its sides The tetrahedron also has a beautiful and unique property And it is the only Platonic Solid with no parallel faces When we say tetrahedron we often mean regular tetrahedron (in other words all faces are the same size and shape)
Tetrahedron - Meaning, Properties, Formulas | Tetrahedron Shape - Cuemath
A tetrahedron is a polyhedron with 4 faces, 6 edges, and 4 vertices, in which all the faces are triangles Observe the tetrahedron given below to see its faces, vertices, and edges
Tetrahedron | All Journal Issues | ScienceDirect. com by Elsevier
Read the latest articles of Tetrahedron at ScienceDirect com, Elsevier’s leading platform of peer-reviewed scholarly literature
TETRAHEDRON Definition Meaning - Merriam-Webster
The simplest tetrahedron is made of four equal-sided triangles: one is used as the base, and the other three are fitted to it and each other to make a pyramid But the great pyramids of Egypt aren't tetrahedrons: they instead have a square base and four triangular faces, and thus are five-sided rather than four-sided

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