User talk:Bgerke

Rectangular pyramid in Solid angle
Hi. I replied to your comment on my talk page. If you know the formula for a true rectangular pyramid, please add it. I have corrected the rectangular pyramid section I added to describe a latitude-longitude rectangle, which isn't quite the same thing (a rectangular pyramid will intersect a sphere in great circle arcs, but lines of latitude aren't great circle arcs). -Amatulic 19:51, 31 January 2007 (UTC)