Quote:
Originally posted by Jim Richards
Starting at one of the Earth's poles, you're traveling on the surface of the earth along a meridan, then turn at the equator, then travel along another meridan, 90 degrees from the first. The length A is 1/4th the circumference of the earth at the equator, though this assumes the earth is really a perfect sphere. Do I win a cookie?
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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...
EDIT , crap , the equator... got it now... duh on my behalf