Consider the spheres shown in figure. Do one or both of the lettered curves in the figure at the right seem to be lines?
A) both are lines
B) l is a line (a great circle), but m is not
C) neither is a line

Question

Consider the spheres shown in figure. Do one or both of the lettered curves in the figure at the right seem to be lines? 
A) both are lines 
B) l is a line (a great circle), but m is not 
C) neither is a line

Quizplus · Accepted Answer

Curve l is a great circle, which is a line on the surface of a sphere. Curve m, on the other hand, is not a line and appears to be a circle of latitude that is not a great circle.

Consider the Spheres Shown in Figure