2006-10-16 09:04:14 · 7 answers · asked by Anonymous in Education & Reference ➔ Other - Education
An icosahedron is a 20-faced polyhedron
2006-10-16 09:14:45 · answer #1 · answered by freeminder 2 · 0⤊ 0⤋
An icosahedron is a 20-faced polyhedron. Examples include the decagonal dipyramid, elongated triangular gyrobicupola (Johnson solid ), elongated triangular orthobicupola , gyroelongated triangular cupola , Jessen's orthogonal icosahedron, metabiaugmented dodecahedron , nonagonal antiprism, parabiaugmented dodecahedron , 18-gonal prism, 19-gonal pyramid, regular icosahedron, and rhombic icosahedron.
"The" icosahedron is the Platonic solid having 12 polyhedron vertices, 30 polyhedron edges, and 20 equivalent equilateral triangle faces, . It is also uniform polyhedron and Wenninger model . It is described by the Schläfli symbol and Wythoff symbol . Coxeter et al. (1999) have shown that there are 58 icosahedron stellations (giving a total of 59 solids when the icosahedron itself is included).
2006-10-16 13:20:30 · answer #2 · answered by ettika 1 · 0⤊ 0⤋
An icosahedron is a solid which has 20 faces.
Usually when you hear "icosahedron" it means a regular icosahedron. This is an icosahedron which has 20 congruent equilateral triangles as its faces.
An icosahedron is one of the 5 standard "Platonic solids"
studied by Plato and other Greek mathematicians.
2006-10-16 09:17:51 · answer #3 · answered by True Blue 6 · 0⤊ 0⤋
a polyhedron having 20 faces
2006-10-16 09:15:26 · answer #4 · answered by parsons 2 · 0⤊ 0⤋
What Is An Icosahedron
2017-02-20 12:10:07 · answer #5 · answered by ? 4 · 0⤊ 0⤋
a polyhedron with 20 faces (sides).
2006-10-16 09:13:23 · answer #6 · answered by missyhardt 4 · 0⤊ 0⤋
20-sided figure.
2006-10-16 09:12:59 · answer #7 · answered by wjsst22 2 · 0⤊ 0⤋