<< Question 2: How many vertices, edges, and faces has the Stella Octangula? >> I'll buy it: why isn't the answer just 8, 12, 8 (two tetrahedra) ? WFL On 12/20/17, Bill Gosper <billgosper@gmail.com> wrote:
During evaluation of In[569]:= 8.60579 secs, 2 components
Out[569]= {{π, 12}, {3π/5, 20}}
I.e., 12 vertices have solid angle π. True or false: Four RTs with disjoint interiors can intersect at a point and fill a neighborhood of it. Can five with disjoint interiors intersect at one point? Six?? 6×⅗π < 4π.
Question 2: How many vertices, edges, and faces has the Stella Octangula? --rwg _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com https://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun