Here's why:

* Latitude measures your position north or south of the Equator. It is expressed in degrees, with 0 degrees being the Equator, 90 degrees North being the North Pole, and 90 degrees South being the South Pole.

* Longitude measures your position east or west of the Prime Meridian, a line of longitude that runs through Greenwich, England.

Let me know if you have any other questions!