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the shortest way to get from one location on earth to another
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Which parallel of latitude are great circles?
All parallels of latitude, except for the Equator, are not great circles. Great circles are the largest circles that can be drawn on a sphere and pass through its center, whereas small circles do not pass through the center of the sphere.
Is the Tropic of Cancer a great circle?
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.
Why are lines of longitude called great circles?
Because they make big circles around the Earth.
Why is a great circle used for navigation?
Because any 'Great Circle' is the shortest distance across a sphere. Where the Earth is concerned , all the meridians and the Equator are Great Circles. The Plane of a 'Great Circles ' 'cut' the sphere into two equally sized hemispheres. NB Other than the Equator all the latitudes are NOT great Circles.
How many great circles are there on a sphere?
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.
Are all parallels great circles?
No, not all parallels are great circles. A great circle is the largest possible circle that can be drawn on a sphere, and it divides the sphere into two equal hemispheres. Parallels, or lines of latitude, are circles that run parallel to the equator, and only the equator itself is a great circle. Other parallels, such as those near the poles, are smaller circles and do not divide the sphere into equal halves.
What geometric shape are lines of longitude?
Great circles.
What are lines called in spherical geometry?
great circles
In spherical geometry lines are called .?
great circles
Are there any great circles on the Earth that are entirely in water?
Yes, there are great circles on Earth that are entirely in water, such as the Equator or the Prime Meridian. These circles divide the Earth into two equal halves and are significant in navigation and geographical reference.
What are lines called in Riemann's spherical geometry?
great circles
How many great circles could you draw that are parallel to the great circle shown in this figure?
zero
