The Platonic Icosahedron has twenty faces which are equilateral triangles. In the Golden Icosahedron, twelve of those triangles (the yellow ones) have been replaced by acute, isosceles triangles with a leg:base ratio which is the Golden Ratio.
To try the software I used to make this, just visit http://www.software3d.com/stella.php.
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A beauty!
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Simple but elegant!
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Thank you!
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