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| Imaginary lines shown from north to south along the earth surface. |
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| Imaginary lines north or south of the earths equator |
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| Aimaginary line that circles arond the middle of the earth |
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| A planets meridian adoted as the zero of longitude |
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| An imaginary line on the surface of the earth following (approximately) the 180th meridian |
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| A circle showing the principle directions printed on a map or chart |
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| South of East London , England, located in the Royal Borough of Greenwich and situated 5.5 miles (8.9 km) east south-east of Charing Cross |
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| Stands for Global Positioning System, is a radio navigation system that allows land, sea and airborne users to determine their exact location, velocity |
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