Hi flyer by the wire.
You can join two points with an infinite number of curved lines (including a Line of Latitude). However, only one line is the shortest distance, and it will lay on a Great Circle. (Lines of Longitude & the Equator are NOT the ONLY Great Circles.)
I suggest you buy yourself a globe of the world, and an elastic band. It will only take you a couple of minutes to see the difference.
Last edited by rudderrudderrat; 2nd Mar 2011 at 15:01.
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