Well, they're more akin to a mix of heptagon, hexagon, and the
   five sided one... and however else they end up tongue emoticon
   But shapes that are mostly spherical-ish in shape stuck to a two
   dimensional-ish surface (like the curved back of the inside of
   your eyeball) pack in sorta hexagonal packing form. I mean we
   gotta map it out on 2D paper, on 2D screens tongue emoticon So
   yeah, it's kinda a triangular grid, kinda hexagonal, but like
   most maps, a bit of information gets lost in the process of
   simplification smile emoticon