Walk on the surface of a sphere, in a straight line?
A straight line in elliptic geometry, presumably.
That’s called a “geodesic”. I’m not sure why they don’t just call it a “line”, but they don’t.
Walk on the surface of a sphere, in a straight line?
A straight line in elliptic geometry, presumably.
That’s called a “geodesic”. I’m not sure why they don’t just call it a “line”, but they don’t.