incremental, vertex-degenerate, facet-degenerate, triangulation, centered, faces>>size
2d
<p>
a=ceil(sqrt(d))
b=floor(d/a)
c=d mod a
sumpolygon
c ? (n*a)b*8c : (n*a)b
c ? V(sumpolygon(a,n))b x V(sumpolygon(c,n)) : V(sumpolygon(a,n))b