A great circle lies in the plane that includes the center of the Earth. The plane of a small circle doesn't include the center of the Earth.
A small circle is a simple circle on a two dimensional plane. The great circle is the circle around a sphere that is on the plane that intersects with the center of the sphere. It is the reason that on a flat map the paths of planes seem to curve to go to and from Europe and the North American continent.
difference circle
In a circle what is the difference between a central angle and an arc?Read more: In_a_circle_what_is_the_difference_between_a_central_angle_and_an_arc
Opposite hemispheres.
A circle has a constant radius whereas an oval does not.
A great circle is a circle on the surface of a sphere that has the same center as the sphere, while a small circle does not share the same center as the sphere. Great circles have the largest circumference of all circles on a sphere, whereas small circles have smaller circumferences. The equator is an example of a great circle on Earth, while lines of latitude other than the equator are examples of small circles.
The radius of a circle is 1/2 of the diameter.
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The horizon is the great circle on the sky midway between the celestial poles.
A line is straight and never-ending. A circle curves and is round.
Diameter is the distance across a circle. The circumference of a circle is the distance around the outside of the circle.
circles have no sides or angles