Great Circle
Great circle
A great circle is a
circle on the surface of a
sphere that has the same circumference as the sphere, dividing the sphere into two equal
hemispheres. Equivalently, a great circle on a sphere is a circle on the sphere's surface whose center is the same as the center of the sphere. A great circle is the intersection of a sphere with a plane going through its center. A great circle is the largest circle that can be drawn on a given sphere.
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great circle route
The route which follows the shortest arc of a great circle between two points. 1/3/73
orthodromie
Route constituée par le plus petit des 2 arcs du grand cercle joignant 2 points de la surface de la terre. 1/3/73
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