[masraum]

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?

Now what do you do about the fact that a triangle is a shape that has 3 angles that collectively should add up to 180*, but yours just added up to 270*?