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what are latitudes?

Latitude  is a geographic coordinate that specifies the north-south position of a point on the Earth's surface. Latitude is an angle  which ranges from 0° at the Equator to 90° (North or South) at the poles. Lines of constant latitude, or parallels, run east–west as circles parallel to the equator. Latitude is used together with longitude to specify the precise location of features on the surface of the Earth. Since the actual physical surface of the Earth is too complex for mathematical analysis, two levels of abstraction are employed in the definition of these coordinates.


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