![]() ![]() The length of a meridian on a modern ellipsoid model of Earth ( WGS 84) has been estimated as 20,003.93 km (12,429.87 mi). A meridian is half of a great circle on Earth's surface. On a Mercator projection or on a Gall-Peters projection, each meridian is perpendicular to all circles of latitude. The position of a point along the meridian is given by that longitude and its latitude, measured in angular degrees north or south of the Equator. ![]() In other words, it is a line of longitude. In geography and geodesy, a meridian is the locus connecting points of equal longitude, which is the angle (in degrees or other units) east or west of a given prime meridian (currently, the IERS Reference Meridian). Meridians run between the North and South poles. JSTOR ( July 2018) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed.įind sources: "Meridian" geography – news Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification. ![]()
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