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meridian, imaginary north–south line on the Earth’s surface that connects both geographic poles; it is used to indicate longitude. The 40th meridian, for example, has a longitude of 40° E or 40° W. See latitude and longitude.
- Greenwich meridian | Definition, History, Location, Map, & Facts
Greenwich meridian, an imaginary line, last established in...
- prime meridian - Kids | Britannica Kids | Homework Help
The prime meridian is the imaginary line that divides Earth...
- Greenwich meridian | Definition, History, Location, Map, & Facts
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). In other words, it is a line of longitude.
19 de oct. de 2023 · The prime meridian is the line of 0° longitude, the starting point for measuring distance both east and west around Earth. The prime meridian is arbitrary, meaning it could be chosen to be anywhere. Any line of longitude (a meridian) can serve as the 0° longitude line.
17 de may. de 2024 · Greenwich meridian, an imaginary line, last established in 1851, used to indicate zero degrees longitude. It passes through Greenwich, London, and ends at the North and South poles. Because it indicated zero degrees longitude, it was also known as the prime meridian.
21 de jun. de 2024 · noun. imaginary line around the Earth, running north-south at 0 degrees longitude. Also called the prime meridian. latitude. noun. distance north or south of the Equator, measured in degrees. longitude.
A prime meridian is an arbitrarily -chosen meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its anti-meridian (the 180th meridian in a 360°-system) form a great circle.
The prime meridian is the imaginary line that divides Earth into two equal parts: the Eastern Hemisphere and the Western Hemisphere. The prime meridian is also used as the basis for the world’s time zones. The prime meridian appears on maps and globes.
