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Tag Archives: enneagon
A Polyhedron Made of Enneagons and Pentagons
This polyhedron has 20 enneagons and 12+60=72 pentagons (of two types) as faces. I made it using Stella 4d, which is available at http://www.software3d.com/Stella.php.
Posted in Mathematics
Tagged enneagon, geometry, Mathematics, nonagon, pentagon, polyhedra, polyhedron
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When We Build Our Dyson Sphere, Let’s Not Use Enneagonal Antiprisms
Before an undertaking as great as building a Dyson Sphere, it’s a good idea to plan ahead first. This rotating image shows what my plan for an enneagonalantiprismbased Dyson Sphere looked like, at the hemisphere stage. At this point, the … Continue reading
Posted in Fiction, Life, Mathematics, Science and Scientists
Tagged absurd, antiprism, astronomy, Dyson Sphere, enneagon, geometry, Humor, Mathematics, nerd, plan, plan ahead, planning, Satire, satirical, science, science fiction, silliness, silly
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Three Convex Polyhedra with Tetrahedral Symmetry, Each Featuring Four Regular Enneagons
In addition to the four regular enneagons, the polyhedron above also has rhombi and isosceles triangles as faces. The next one, however, adds equilateral triangles, instead, to the four regular enneagons, along with trapezoids and rectangles. Only the last of … Continue reading
Posted in Mathematics
Tagged enneagon, geometry, Mathematics, nonagon, polyhedra, polyhedron, symmetrohedron, tetrahedral
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A Mandala Made of Hexagons, Enneagons, and Dodecagons
I recently rediscovered this “lost work,” which I made using Geometer’s Sketchpad, in 2011 — before I started this blog, which is why it has not appeared here before.
Posted in Art, Mandalas, Mathematics
Tagged Art, dodecagon, enneagon, geometric, geometrical, geometry, hexagon, mandala, mathematical, Mathematics
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