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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 - Definition, Formulas, Examples, and Diagrams
What is a tetrahedron Learn how to find its surface area and volume with formulas, solved examples, and diagrams
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 - 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
Tetrahedral symmetry - Wikipedia
A regular tetrahedron has 12 rotational (or orientation-preserving) symmetries, and a symmetry order of 24 including transformations that combine a reflection and a rotation
Spinning Tetrahedron - Math is Fun
A tetrahedron is actually a triangular pyramid! It has a triangle for a base and three more triangles for its sides
Tetrahedron | Article collections | ScienceDirect. com by Elsevier
Read the latest chapters of Tetrahedron at ScienceDirect com, Elsevier’s leading platform of peer-reviewed scholarly literature
Tetrahedron | geometry | Britannica
Also known as the five regular polyhedra, they consist of the tetrahedron (or pyramid), cube, octahedron, dodecahedron, and icosahedron Pythagoras (c 580–c 500 bc) probably knew the tetrahedron, cube, and dodecahedron
Tetrahedron - Math. net
Below is a tetrahedron example A tetrahedron is a three-dimensional (3D) figure made up of 4 triangular faces It is also known as a triangular pyramid If all of the triangles that form the tetrahedron are congruent equilateral triangles, the tetrahedron is referred to as a regular tetrahedron
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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