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# Meridians and-parallels

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### Meridians and-parallels

1. 1. MERIDIANS AND PARALLELSA series of imaginary vertical and horizontal lines enables us to identify the exact location of places on Earth.
2. 2. Meridians are semicircles which go from one pole to the other. Theprime meridian, or Greenwich meridian (0º), is the point of reference for other meridians.
3. 3. Parallels are circles which are perpendicular to the meridians. The equator is the most important parallel and is the point of reference for the other parallels.
4. 4. Other important parallels, from north to south, are: The Arctic Circle
5. 5. Latitude and longitude indicate geographical coordinates: the exact location of a place on the Earth.
6. 6. Latitude is measured by using the At the poles they are 90º parallels which start at the equator (0º). They are lalitudenorth (N) or south (S).
7. 7. They run vertically from 0º to 180º to Longitude is measured by using the the west (W)… meridians which start at the prime meridian (0º). …and 0º to 180º to the east (E).