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icosahedron    
n. 二十面体

二十面体

icosahedron
n 1: any polyhedron having twenty plane faces

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  • Icosahedron - Wikipedia
    In geometry, an icosahedron ( ˌaɪkɒsəˈhiːdrən, - kə -, - koʊ - or aɪˌkɒsəˈhiːdrən [1]) is a polyhedron with 20 faces The name comes from Ancient Greek εἴκοσι (eíkosi) 'twenty' and ἕδρα (hédra) 'seat' The plural can be either "icosahedra" ( - drə ) or "icosahedrons"
  • Icosahedrons - Meaning, Shape, Formula - Cuemath
    Icosahedron is considered as the fifth and final platonic solid that consists of 20 triangle-shaped sides which symbolizes the element of water What Does Icosahedron Look Like? The shape icosahedron is a polyhedron i e a 3D shape with flat surfaces
  • Spinning Icosahedron - Math is Fun
    For a regular icosahedron (where all faces are equilateral triangles): The name icosahedron comes from the Greek icosa- meaning 20, because it is a polyhedron with 20 faces When we have more than one icosahedron they are called icosahedra
  • Icosahedron - Math. net
    An icosahedron is a polyhedron with 20 faces The prefix "icosa" means twenty When "icosahedron" is used without any qualifiers, we assume that it is a regular icosahedron, which is an icosahedron in which the 20 faces are all equilateral triangles An icosahedron is a three-dimensional figure made up of only polygons
  • Icosahedron | Definition, Examples, Parts, Properties Nets
    An icosahedron has 30 edges—the angle between the edges of an icosahedron measures 60° The corners of an icosahedron, where the faces meet, are called vertices There are 12 vertices in an icosahedron
  • Icosahedron
    An ICOSAHEDRON is composed of 20 facets, each an equilateral triangle, and 12 vertices, and because of the axes of rotational symmetry is said to have 5:3:2 symmetry
  • Icosahedron - A regular polyhedron with 20 faces - One of the platonic . . .
    An icosahedron is a regular polyhedron that has 20 faces All the faces are equilateral triangles and are all congruent, that is, all the same size It is one of the five Platonic solids
  • Icosahedron - Simple English Wikipedia, the free encyclopedia
    An icosahedron is a polyhedron (a three dimensional shape) that is made of triangles and has twenty sides There are many kinds of icosahedra, with some being more symmetrical than others The best known is the regular icosahedron, a Platonic solid made of equilateral triangles
  • Icosahedron -- from Wolfram MathWorld
    The regular icosahedron (often simply called "the" icosahedron) is the regular polyhedron and Platonic solid having 12 polyhedron vertices, 30 polyhedron edges, and 20 equivalent equilateral triangle faces,
  • ICOSAHEDRON - University of Florida
    The icosahedron is the most complicated of the five regular platonic solids It consists of twenty equilateral triangle faces (F=20), a total of twelve vertices (V=12), and thirty edges (E=30) That is, it satisfies the Euler Formula that F+V-E=2 To construct this 3D





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