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Tag Archives: heptagon
Four Polyhedra Featuring Heptagons
Heptagons only appear infrequently in interesting polyhedra. I recently found a few that I like. To form the first of these solids, shown above, I started with the icosidodecahedron, dropped the symmetry of the model from icosahedral to tetrahedral, and … Continue reading
A TetrahedrallySymmetric Polyhedron Featuring Heptagons
Created using Stella 4d: Polyhedron Navigator; see this website to try it for yourself!
Posted in Mathematics
Tagged geometry, heptagon, Mathematics, polyhedral, polyhedron
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Three Polyhedra Featuring Heptagons
For some reason I do not fully understand, polyhedra featuring heptagons, even if irregular, do not appear often, at least not in my geometrical investigations — so I was pleased to find these three, using Stella 4d: Polyhedron Navigator, available … Continue reading
A Box of Heptagons
It is hard to find polyhedra which contain regular heptagons, but that simply makes the search more challenging, and therefore more fun. This polyhedron features six regular heptagons, and was created with Stella 4d, software available here.
A Star with 49 Points, to Celebrate the 49Hour Weekend Caused by the End of Daylight Saving Time, Tomorrow, in Most of the USA
This is the weekend that Daylight Saving Time (or DST) ends in most parts of the USA, which means that this is the only weekend of the year, here, which lasts 49 hours, rather than the usual 48. To celebrate … Continue reading
Posted in Art, Life, Mathematics, Politics
Tagged America, Arizona, Art, daylight saving time, daylight savings time, DST, geometric, geometrical, geometry, heptagon, heptagram, mathematical, Mathematics, seven, star, time, USA
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Heptamandala
Posted in Art, Mandalas
Tagged 7, Art, geometric, geometrical, heptagon, heptagonal, mandala, mathematical, seven
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A Survey of Right Angles in Convex Heptagons
In how many ways can different numbers of right angles appear in convex heptagons? Heptagons do not have to have right angles at all, of course. If a heptagon has exactly one right angle, only one arrangement is possible: a … Continue reading