Tag Archives: enneagon

Tessellation of Triangles and Pentagons

Alternately, this can be seen as a tessellation of hexagons and enneagons. Which do you see?

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Two Polyhedra, Each Featuring Enneagons and Octagons

I used Stella 4d: Polyhedron Navigator to make these. You can try it for yourself at http://www.software3d.com/Stella.php.

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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.

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Tessellation Featuring Regular Enneagons, Regular Hexagons, and Isosceles Triangles

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Tessellation Featuring Regular Enneagons and Hexaconcave, Equilateral Dodecagons

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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 enneagonal-antiprism-based Dyson Sphere looked like, at the hemisphere stage. At this point, the … Continue reading

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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

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