This moving image of a projection of the four-dimensional 120-cell was made using Stella 4d, software you can try for free here: http://www.software3d.com/stella.php
Rotating Hyperdodecahedron
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Tag Archives: Mathematics
A Faceted Icosidodecahedron
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In this polyhedron, there are, easily visible, twenty light blue faces which are equilateral triangles. Inside the polyhedron (and therefore harder to spot) are thirty purple faces which are Golden rectangles, along with twelve large, orange regular pentagonal faces.
To try the software I used to make this polyhedron, please visit www.software3d.com/stella.php.
Mandala with Golden Rectangles
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Eight Golden Spirals
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Mandala Based On Sixty
That’s the finished mandala. These are made using MS-Paint and Geometer’s Sketchpad, and I use Sketchpad first. Here’s what it looked like at the half-way point:
Hexadecagon with Diagonals
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Pentagonal Mandala
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Euclidean Construction of the Regular Pentagon
It’s not the same one you can easily find in textbooks.
[Later edit] For a step-by-step explanation of this construction, see this post: https://robertlovespi.wordpress.com/2014/08/10/a-euclidean-construction-of-a-regular-pentagon-with-a-given-edge-length/.
Circling the Square
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Snowflake Mandala
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