How is the equator similar to the prime meridian? A. Both the equator and prime meridian are lines that divide Earth into the Northern and Southern hemispheres. B. Both the equator and the prime meridian are imaginary base lines from which locations of Earth can be measured. C. Both the equator and the prime meridians are symbols used in maps. D. Both the equator and the prime meridian show the actual sizes and shapes of continents.