Icosahedron -- from Wolfram MathWorld | Math geometry, Polyhedron, Sacred geometry
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Icosahedron -- from Wolfram MathWorld

The (general) icosahedron is a 20-faced polyhedron (where icos- derives from the Greek word for "twenty" and -hedron comes from the Indo-European word for "seat"). Examples illustrated above include the decagonal dipyramid, elongated triangular gyrobicupola (Johnson solid J_(36)), elongated triangular orthobicupola (J_(35)), gyroelongated triangular cupola (J_(22)), Jessen's orthogonal icosahedron, metabiaugmented dodecahedron (J_(60)), nonagonal antiprism,...
Stephanie Ray
Stephanie Ray

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