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Definition: latitude

The location north or south of the equator, measured in degrees from the equator, which is 0. The North Pole is plus 90 degrees, and the South Pole is minus 90 degrees. Degrees are further divided into minutes and seconds.

East/West Longitude
Longitude is the location east and west of the Greenwich prime meridian in London, measured in degrees from this reference point, which is 0. Europe is plus degrees to the east, and the Americas are minus degrees to the west.

To pinpoint a location on earth, the north/south latitude (y-axis) is combined with the east/west longitude (x-axis). For example, the Empire State Building in New York is expressed in degrees, minutes and seconds as follows: