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GREAT CIRCLE

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Originally appearing in Volume V12, Page 398 of the 1911 Encyclopedia Britannica.
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See also:

GREAT CIRCLE . The circle in which a See also:sphere is cut by a See also:plane is called a " great circle," when the cutting plane passes through the centre of sphere. Treating the See also:earth as a sphere,the meridians of See also:longitude are all great circles. Of the See also:parallels of See also:latitude, the See also:equator only is a great circle. The shortest See also:line joining any two points is an arc of a great circle. For " great circle sailing " see See also:NAVIGATION.

End of Article: GREAT CIRCLE

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