I am the distance on the sphere? I wonder how to draw a section of a sphere with Sktechpad or other tools?
Since the sphere is shown on the plane, how to draw the great circle?
I am the distance on the sphere? I wonder how to draw a section of a sphere with Sktechpad or other tools?
Since the sphere is shown on the plane, how to draw the great circle?
Let $C$ be the circle representing the sphere in your drawing. The images of great circles are ellipses whose center of symmetry coincides with the midpoint of $C$, and which touch $C$ in two points.