Emily works at a music store where she repairs guitars. She keeps track of the types of guitars she’s fixed and the types of repairs she’s made. Unfortunately, Emily has terrible handwriting. When her manager asks for her records, she can’t read all of her numbers.

On traditional maps, earth is represented in a flat plane, or by euclidean geometry. however, a globe is a more accurate model that comes from elliptical geometry. how does a globe represent the fact that there are no parallel lines in elliptical geometry? the equator is not parallel to any other latitudinal lines. the north and south poles are never connected by a geodesic. the geodesics connecting the north and south poles never intersect. the geodesics connecting the north and south poles intersect at both of the poles.