Op Art Covering a Rhombic Dodecahedron

Rhombic Dodeca

Programs used to make this included Geometer’s Sketchpad, MS-Paint, and Stella 4d: Polyhedron Navigator, which was used to assemble everything else into what you see here. You may try Stella for free at http://www.software3d.com/Stella.php

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Twice Eleven is Twenty-Two

22

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Three Rings of Eleven

Three Rings of Eleven

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Eye

eye

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SevenStar

SevenStar One

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Tessellation of Concave Hexagons

concave hexagon tessellation

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Another Tessellation of Octagons

Several tessellations of octagons have been published in this space in the past. Here’s the latest in this occasional series.

another octagon tessellation

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