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