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{{Semireg polyhedra db|Semireg polyhedron stat table|tC}}
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In [[geometry]], the '''truncated cube''', or '''truncated hexahedron''', is an [[Archimedean solid]]. It has 14 regular faces (6 [[octagon]]al and 8 [[triangle (geometry)|triangular]]), 36 edges, and 24 vertices.
 
If the truncated cube has unit edge length, its dual [[triakis octahedron]] has edges of lengths 2 and <math>\scriptstyle {2+\sqrt{2}}</math>.
 
==Area and volume==
The area ''A'' and the [[volume]] ''V'' of a truncated cube of edge length ''a'' are:
:<math>A = 2\left(6+6\sqrt{2}+\sqrt{3}\right)a^2 \approx 32.4346644a^2</math>
:<math>V = \frac{1}{3}\left(21+14\sqrt{2}\right)a^3 \approx 13.5996633a^3.</math>
 
==Orthogonal projections==
The ''truncated cube'' has five special [[orthogonal projection]]s, centered, on a vertex, on two types of edges, and two types of faces: triangles, and octagons. The last two correspond to the B<sub>2</sub> and A<sub>2</sub> [[Coxeter plane]]s.
{|class=wikitable width=640
|+ Orthogonal projections
|-
!Centered by
!Vertex
!Edge<br>3-8
!Edge<br>8-8
!Face<br>Octagon
!Face<br>Triangle
|-
!Truncated<BR>cube
|[[File:Cube t01 v.png|100px]]
|[[File:Cube t01 e38.png|100px]]
|[[File:Cube t01 e88.png|100px]]
|[[File:3-cube t01_B2.svg|100px]]
|[[File:3-cube t01.svg|100px]]
|-
![[Triakis octahedron|Triakis<BR>octahedron]]
|[[File:Dual truncated cube t01 v.png|100px]]
|[[File:Dual truncated cube t01 e8.png|100px]]
|[[File:Dual truncated cube t01 e88.png|100px]]
|[[File:Dual truncated cube t01_B2.png|100px]]
|[[File:Dual truncated cube t01.png|100px]]
|- align=center
!Projective<BR>symmetry
|[2]
|[2]
|[2]
|[4]
|[6]
|}
 
==Cartesian coordinates==
 
The following [[Cartesian coordinates]] define the vertices of a [[Truncation (geometry)|truncated]] [[hexahedron]] centered at the origin with edge length 2ξ:
:(±ξ, ±1, ±1),
:(±1, ±ξ, ±1),
:(±1, ±1, ±ξ)
where ξ = <math>\scriptstyle {\sqrt2 - 1}</math>
 
== Vertex arrangement==
It shares the [[vertex arrangement]] with three [[nonconvex uniform polyhedra]]:
{|class="wikitable" width="400" style="vertical-align:top;text-align:center"
|[[Image:Truncated hexahedron.png|100px]]<br>Truncated cube
|[[Image:Uniform great rhombicuboctahedron.png|100px]]<br>[[Nonconvex great rhombicuboctahedron]]
|[[Image:Great cubicuboctahedron.png|100px]]<br>[[Great cubicuboctahedron]]
|[[Image:Great rhombihexahedron.png|100px]]<br>[[Great rhombihexahedron]]
|}
 
==Related polyhedra==
The truncated cube is one of a family of uniform polyhedra related to the cube and regular octahedron.
 
{{Octahedral truncations}}
 
This polyhedron is topologically related as a part of sequence of uniform [[Truncation (geometry)|truncated]] polyhedra with [[vertex configuration]]s (3.2n.2n), and [n,3] [[Coxeter group]] symmetry.
{{Truncated figure1 table}}
 
It is topologically related to a series of polyhedra and tilings with [[face configuration]] V''n''.6.6.
{{Truncated figure4 table}}
 
=== Alternated truncation===
 
A cube can be [[Alternation (geometry)|alternately]] truncated producing [[tetrahedral symmetry]], with six hexagonal faces, and four triangles at the truncated vertices. It is one of a sequence of [[Truncated rhombic dodecahedron#related polyhedra|alternate truncations of polyhedra and tiling]].
 
:[[File:Alternate_truncated_cube.png|100px]]
 
== Related polytopes ==
The ''[[Truncation (geometry)|truncated]] [[cube]]'', is second in a sequence of truncated [[hypercube]]s:
{{Truncated hypercube polytopes}}
 
==See also==
*[[:Image:Truncatedhexahedron.gif|Spinning truncated cube]]
*[[Cube-connected cycles]], a family of graphs that includes the [[skeleton (topology)|skeleton]] of the truncated cube
 
==References==
*{{The Geometrical Foundation of Natural Structure (book)}} (Section 3-9)
* Cromwell, P. ''Polyhedra'', CUP hbk (1997), pbk. (1999). Ch.2 p.79-86 ''Archimedean solids''
 
==External links==
*{{mathworld2 |urlname=TruncatedCube |title=Truncated cube |urlname2=ArchimedeanSolid |title2=Archimedean solid}}
*{{KlitzingPolytopes|polyhedra.htm|3D convex uniform polyhedra|o3x4x - tic}}
*[http://www.dr-mikes-math-games-for-kids.com/polyhedral-nets.html?net=621wh65c7Ey8v4cRpEVhGs0pPxZ5raM9uNf8HcBUgOyrp6acSwZGvkvEcL6m06RDKxmSAduYsvTvoCvEDokvHrjyVEqlGVdIH8WamnxFO1qnGpUtgt7K0ZD57RlX&name=Truncated+Cube#applet Editable printable net of a truncated cube with interactive 3D view]
*[http://www.mathconsult.ch/showroom/unipoly/ The Uniform Polyhedra]
*[http://www.georgehart.com/virtual-polyhedra/vp.html Virtual Reality Polyhedra] www.georgehart.com: The Encyclopedia of Polyhedra
**[[VRML]] [http://www.georgehart.com/virtual-polyhedra/vrml/truncated_cube.wrl model]
**[http://www.georgehart.com/virtual-polyhedra/conway_notation.html Conway Notation for Polyhedra] Try: "tC"
 
{{Archimedean solids}}
{{Polyhedron navigator}}
{{Polyhedron-stub}}
 
[[Category:Uniform polyhedra]]
[[Category:Archimedean solids]]

Revision as of 06:47, 6 February 2014



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My buddies and fam are amazing and spending time with them at pub gigs or dinners is consistently vital. As I discover that you could never get a good dialogue against the sound I have never been into clubs. In addition, I have two quite cunning and definitely cheeky dogs who are always keen to meet fresh folks.
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