Lexie wanted to have a heel-toe race with her older brother, josh, and her sister, hannah. she said, "my feet are smaller, so i should only have to go a shorter distance than you two." her sister said, "that makes sense- let's race our ages." they measured off 7 feet for lexie's track, 16 feet for josh's track and 10 feet for hannah's track."now let's, measure our shoes," said shoes. "my shoe is 1/2 of a foot, said lexie. three of my shoes add up to 2 feet. said, hannah. josh said his shoe was exactly a foot long.

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.