Quote:
Originally posted by svandamme
if you do this on the earths surface , then perfect 90 degree turns would not end up where you started , not even if it were a perfect sphere...
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Huh? Pole to equator, turn left, go 1/4th the way around, turn left again, back to pole and when you get there, you're facing 90 degrees from your initial course. Pole to equator is 1/4th the circumference, too. Right?
Saw your edit...nevermind.
