Lines of latitude,also called parallels, are imaginary lines that divide the Earth.
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Latitudes are horizontal lines that measure the distance north or south of the equator. Longitudes are vertical lines that measure east or west of the meridian in Greenwich, England.
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Lines of latitude start at 0 degrees at the equator and end at 90 degrees at the North and South Poles (for a total of 180 degrees of latitude).