In geometry, an __icosahedron__ is a polyhedron with 20 faces. The name comes from Ancient Greek εἴκοσι (eíkosi) meaning "twenty" and from Ancient Greek ἕδρα (hédra) meaning "seat" - wikipedia

Check the visual morphing of a hexahon and an internal 3D cube heree - webpack.js.org

en:Peudoicosahedron - wikimedia

There are infinitely many non-similarity (geometry) shapes of icosahedra, some of them being more symmetrical than others. The best known is the (convex polyhedron, non-stellation) regular icosahedron—one of the Platonic solids—whose faces are 20 equilateral triangles.

A rotating Icosahedron. Animated GIF image - wikimedia

Transformations of Polyhedron (jitterbug): Octahedron - Icosahedron - Cuboctahedron - wikimedia

24-cell {3,4,3} - solid, orthogonal projections The copyright holder of this file, Robert Webb, allows anyone to use it for any purpose, provided that the copyright holder is properly attributed. Redistribution, derivative work, commercial use, and all other use is permitted. Attribution: Attribution must be given to Robert Webb's Stella software as the creator of this image along with a link to the website: http://www.software3d.com/Stella.php. A complimentary copy of any book or poster using images from the Software would also be appreciated where feasible. Attribution   This work is free and may be used by anyone for any purpose. If you wish to use this content, you do not need to request permission as long as you follow any licensing requirements mentioned on this page. Wikimedia Foundation has received an e-mail confirming that the copyright holder has approved publication under the terms mentioned on this page. This correspondence has been reviewed by an OTRS member and stored in our permission archive. The correspondence is available to trusted volunteers as ticket #2011112810034763. If you have questions about the archived correspondence, please use the OTRS noticeboard. Ticket link: https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom&TicketNumber=2011112810034763 - wikimedia

# Sections

Circogonia icosahedra, a species of radiolaria, shaped like a regular icosahedron - wikimedia

# See also

Nice ripple of synchronicity here. Ward has done some work on exactly the geometry we started to use for Earth Visualisations.

This is where we share various ways to understand how to graph an Icosahedron.

# Marc's Twelve Proposed Topics for Neighbourhood Syntegration (Content plus Structure)

> Trampolining at COP 26 Glasgow. Nov 1-12.

Magic Number Five fits nicely into an icosahedron.