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use a compass
No; neither of the tropics is a great circle. The only line of latitude that is a great circle is the equator. The arctic and antarctic circles are not great circles, either.
he does not go around the horn!
The Allies won the Battle of Britain. Pilots came from more than just Great Britain; there were Polish pilots, pilots from all over the Empire. There have been many depictions of American pilots (The USA stayed out of the war at this time) either pretending to be Canadian, or just volunteering to help the Allies.
Because they make big circles around the Earth.
There are an infinite number. If you draw two great circles, no matter how close together they are, I can always draw a great circle ... or 2 or 3 or 10 ... between them.
great circles
Great circles.
great circles
Edison had a great many wonderful inventions. The airplane however, is not one of them.No, he did not invent or make the airplane.
great circles
With great skill, knowledge and expertise!!!