The Equator represents zero degree latitude.
- The equator is an imaginary line that divides the globe into two equal portions.
- The Northern Hemisphere is the northern half of the earth, and the Southern Hemisphere is the southern half.
All parallel circles from the equator up to the poles are called parallels of latitudes. Latitudes are measured in degrees. The equator represents the zero degree latitude. Since the distance from the equator to either of the poles is one-fourth of a circle round the earth, it will measure ¼th of 360 degrees, i.e. 90°. Thus, 90 degrees north latitude marks the North Pole and 90 degrees south latitude marks the South Pole.