Icosahedron With Golden Rectangles (Geometry) Key Chain

Like icosahedrons? Know about golden rectangles? Showcase the icosahedron, a regular polyhedron with 20 identical equilateral triangular faces, 30 edges and 12 vertices, with any of these geometry gifts. The icosahedron is one of five Platonic solids and includes golden rectangles (i.e., a rectangle whose side lengths are in the golden ratio, one-to-phi, or approximately 1:1.618). Mathematicians know that a distinctive feature of this shape is that when a square section is removed, the remainder is another golden rectangle -- one with the same proportions as the first. Educational geometric fun for all!

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Basic Button Keychain

Set your keys apart with a custom keychain. Create your own or choose from thousands of cute and cool designs. The sturdy clasp keeps keys together securely, and holds up well through daily wear-and-tear.

Diameter: 2.25 inches, great for purses and pockets.
Depth: .19 inches
Weight: .25 ounces

Full-color, full-bleed printing
Waterproof
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In Stock • Ships by Mon, Jun 24 • 100% Satisfaction • No Setup Fees • No Minimum Orders • Highest Quality • No Hassle Returns

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Icosahedron With Golden Rectangles (Geometry) Key Chain

4.0 (6 reviews)

$7.00

per keychain

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* plus applicable embroidery conversion fee

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Shape & Size Options

Shape:


Basic Button Keychain $7.00


Premium Round Keychain $35.95


Premium Square Keychain $35.95

Size:


2.25"

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Icosahedron With Golden Rectangles (Geometry)

Like icosahedrons? Know about golden rectangles? Showcase the icosahedron, a regular polyhedron with 20 identical equilateral triangular faces, 30 edges and 12 vertices, with any of these geometry gifts. The icosahedron is one of five Platonic solids and includes golden rectangles (i.e., a rectangle whose side lengths are in the golden ratio, one-to-phi, or approximately 1:1.618). Mathematicians know that a distinctive feature of this shape is that when a square section is removed, the remainder is another golden rectangle -- one with the same proportions as the first. Educational geometric fun for all!

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