Question

what are great circle routes​

Answer 1

Answer:

The shortest course between two points on the surface of a square it lies in a plain that inserts that's the fair centre and was known by mathematician before the time of Columbus.

Explanation:

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Answer 2

Great circle route , the shortest course between two points on the surface of a sphere. It lies in a plane that intersects spheres centre and was known by mathematicians before the time of Columbus.