@wellerstein
Low-res view of opposite side of sphere.
http://raycomfox.images.worldnow.com/images/10075357_G.jpg …
OK, geodesic geometry is breaking my brain. Here's the general pattern. 12 pentagons. But how many hexagons?pic.twitter.com/xtL9hoiI79
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@wellerstein There are 30n^2-10 hexagons. A soccer ball has n=1; the one in your picture has n=2, so 110 hexagons. -
@wellerstein This pic might help. Each one is an icosohedron with r^2 mini-triangles on each face...pic.twitter.com/QftlzxTeIv
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@wellerstein when r is a multiple of 3 (r=3n), the 20r^2 triangles give you 12 pentagons (5 triangles each) and (20r^2-60)/6 hexagons
End of conversation
New conversation -
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@wellerstein 45 of them. when I was a kid I counted the ones on a soccer ball :-)Thanks. Twitter will use this to make your timeline better. UndoUndo
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