Search
Subject Categories:
 Art (413)
 Asperger's (32)
 Blogging (9)
 China and the Han (9)
 eBay (3)
 Education (87)
 Fiction (27)
 Geography (26)
 History (36)
 Humor (40)
 Life (347)
 Mandalas (118)
 Mathematics (1,152)
 Mental Health (69)
 Music (41)
 Mysteries (12)
 Politics (103)
 Quotations (62)
 Religion (58)
 Satire (7)
 Science and Scientists (110)
 Follow RobertLovesPi's Blog on WordPress.com
MostViewed Posts, Recently:

Recent Posts
 A Compound of Two Stellated Polyhedra
 The Complete List of Things to Like about Donald Trump
 Polyhedron with 152 Faces, Including 60 Heptagons
 Zonohedrified Rhombicosidodecahedron with 870 Rhombic Faces
 23 Polyhedra with Icosidodecahedral Symmetry
 Cheer Up, America! It Could Be Worse!
 Six Circles
 American Fascism 2017
 3, 4, 5, 6
 On Building Character During the Trump Presidency
Explore RobertLovesPi By Topic
Arkansas Art Asperger's Aspie astronomy atheism atheist chemistry chiral circle cluster compound cube cuboctahedron dodecahedron dual Education enneagon faceted faceting geometric geometrical geometrical art geometry Golden Ratio hexagon Humor humour icosahedron icosidodecahedral icosidodecahedron kite language life mandala mandalas math mathematical mathematical art Mathematics music nearmiss nonagon octagon octahedron op art pentagon physics politics polygon polyhedra polyhedral polyhedron quotation quote religion rhombic dodecahedron rhombicosidodecahedron rhombic triacontahedron rhombus school science snub dodecahedron star stellated stellation symmetry tessellation tetrahedron tiling triangle truncated icosahedron USA words zonohedronHit Counter
 209,942 hits
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
Leave a comment
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
1 Comment
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
1 Comment
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
Leave a comment