Zonohedra | Uniform polyhedra | Space-filling polyhedra | Archimedean solids | Truncated tilings

Truncated octahedron

In geometry, the truncated octahedron is the Archimedean solid that arises from a regular octahedron by removing six pyramids, one at each of the octahedron's vertices. The truncated octahedron has 14 faces (8 regular hexagons and 6 squares), 36 edges, and 24 vertices. Since each of its faces has point symmetry the truncated octahedron is a 6-zonohedron. It is also the Goldberg polyhedron GIV(1,1), containing square and hexagonal faces. Like the cube, it can tessellate (or "pack") 3-dimensional space, as a permutohedron. The truncated octahedron was called the "mecon" by Buckminster Fuller. Its dual polyhedron is the tetrakis hexahedron. If the original truncated octahedron has unit edge length, its dual tetrakis hexahedron has edge lengths 9/8√2 and 3/2√2. (Wikipedia).

Truncated octahedron
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How to construct an Octahedron

How the greeks constructed the 2nd platonic solid: the regular octahedron Source: Euclids Elements Book 13, Proposition 14. In geometry, an octahedron is a polyhedron with eight faces, twelve edges, and six vertices. The term is most commonly used to refer to the regular octahedron, a Plat

From playlist Platonic Solids

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Chemistry - Molecular Structure (10.5 of 45) Basic Shapes-Octahedral with Free Electron Pairs

Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the octahedral with free electron pair(s).

From playlist CHEMISTRY 14 MOLECULAR STRUCTURE

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How to take the odd root of a negative integer, cube root

👉 Learn how to find the cube root of a number. To find the cube root of a number, we identify whether that number which we want to find its cube root is a perfect cube. This is done by identifying a number which when raised to the 3rd power gives the number which we want to find its cube r

From playlist How To Simplify The Cube Root of a Number

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Platonic and Archimedean solids

Platonic solids: http://shpws.me/qPNS Archimedean solids: http://shpws.me/qPNV

From playlist 3D printing

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d8 truncated octahedron

See http://thedicelab.com/ for more details. These dice are available at http://www.mathartfun.com/shopsite_sc/store/html/DiceLabDice.html

From playlist Dice

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Jane Kostick - 13-Piece Puzzles - G4G13 April 2018

Geometric constructions with 13 pieces

From playlist G4G13 Videos

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Thin Groups and Applications - Alex Kontorovich

Analysis and Beyond - Celebrating Jean Bourgain's Work and Impact May 21, 2016 More videos on http://video.ias.edu

From playlist Analysis and Beyond

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Combinatorics and Geometry to Arithmetic of Circle Packings - Nakamura

Speaker: Kei Nakamura (Rutgers) Title: Combinatorics and Geometry to Arithmetic of Circle Packings Abstract: The Koebe-Andreev-Thurston/Schramm theorem assigns a conformally rigid fi-nite circle packing to a convex polyhedron, and then successive inversions yield a conformally rigid infin

From playlist Mathematics

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quaternion square root of -1

quaternion square root of -1. We calculate the square root of -1 using the quaternions, which involves knowing how to multiply quaternion numbers. The answer will surprise you, because it involves spheres and it will make you see complex numbers in a new way, as north and south poles of ba

From playlist Complex Analysis

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Using prime factorization to take the cube root of a number, cuberoot(64)

👉 Learn how to find the cube root of a number. To find the cube root of a number, we identify whether that number which we want to find its cube root is a perfect cube. This is done by identifying a number which when raised to the 3rd power gives the number which we want to find its cube r

From playlist How To Simplify The Cube Root of a Number

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The Honeycombs of 4-Dimensional Bees ft. Joe Hanson | Infinite Series

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/donateinfi Be sure to check out It's OK to be Smart's video on nature's love of hexagons https://youtu.be/Pypd_yKGYpA And try CuriosityStream today: http://curiositystream.com/inf

From playlist Higher Dimensions

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AlgTop8: Polyhedra and Euler's formula

We investigate the five Platonic solids: tetrahedron, cube, octohedron, icosahedron and dodecahedron. Euler's formula relates the number of vertices, edges and faces. We give a proof using a triangulation argument and the flow down a sphere. This is the eighth lecture in this beginner's

From playlist Algebraic Topology: a beginner's course - N J Wildberger

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Cookie Shapes!

Avoiding math to have a relaxing Saturday with friends. Links to everyone's cool stuff below: Gwen Fisher: http://www.beadinfinitum.com/ She also has a blog: http://gwenbeads.blogspot.com/ Also buy everything from her etsy shop before someone else does: https://www.etsy.com/shop/gwenbead

From playlist Thanksgiving: Edible Math

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AlgTop16: Rational curvature of polytopes and the Euler number

We show that the total curvature of a polyhedron is equal to its Euler number. This only works with the rational formulation of curvature, using an analog of the turn angle suitable for the 2 dimensional sphere. This important modification to the theory is original with this lecture series

From playlist Algebraic Topology: a beginner's course - N J Wildberger

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Gear cube and Brain gear

Exploring some mechanisms based on bevel gears, with Sabetta Matsumoto. These are our interpretations of some reasonably well known designs. The earliest Gear cube I am aware of is this one, uploaded by Emmett Lalish: https://www.thingiverse.com/thing:50716 The earliest Brain gear I know

From playlist 3D printing

Related pages

Hexagon | Goldberg polyhedron | Queue number | LCF notation | Rhombic triacontahedron | Orthographic projection | Coxeter–Dynkin diagram | Conformal map | Hypercube | Tetrahedral symmetry | Tetrakis hexahedron | Uniform coloring | Volume | Permutation | Regular graph | Schlegel diagram | Archimedean solid | Parallelohedron | Triangular cupola | Vertex (geometry) | Johnson solid | Equilateral triangle | Truncated triheptagonal tiling | Zonohedron | Square pyramid | Honeycomb (geometry) | Truncation (geometry) | Tesseract | Graph theory | Rubik's Cube | Square | Mathematics | Octahedral symmetry | Permutohedron | Bitruncation | Dihedral symmetry in three dimensions | Vertex (graph theory) | Voronoi tessellation | Cubic graph | Stereographic projection | Bitruncated cubic honeycomb | Zero-symmetric graph | Convex uniform honeycomb | Conway polyhedron notation | Octahedron | Geometry | Dual polyhedron | Archimedean graph