Final answer:
Longitude and latitude are used to describe positions on Earth. Longitude lines run east to west, while latitude lines run north to south.
Step-by-step explanation:
Any position on Earth is described by two numbers, its longitude and its latitude. If a pilot or a ship’s captain wants to specify the position on a map, these are the coordinates they would use. Longitude lines run east to west. There are 360 of them, each of these is called a degree. The 0° line or Prime Meridian runs through Greenwich in England, hence the expression Greenwich Mean Time, or GMT. Latitude lines run north to south. 0° latitude runs along the Equator. There are 90° lines to the north and south of the Equator. 90° north is the North Pole and 90° south is the South Pole.
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