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The reference for longitude ... the definition of 'zero' longitude ... is the Prime Meridian.

That imaginary line joins the north and south poles, and runs through Greenwich, a

suburb of London, UK.

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Q: What is the reference point for lines longitude and where is it?
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Related questions

What reference lines are used to locate points on earth?

Latitude and Longitude


What are imaginary vertical lines found on maps are called?

Lines of longitude are imaginary vertical lines that represent the angular distance, in degrees, minutes, and seconds, of a point east or west of the Prime Meridian (Greenwich). Lines of longitude are often referred to as meridians. The lines of longitude run from the North pole to the South pole and at the poles all the lines of longitude intersect at a single point.


At what point of earth do all lines of longitude meet?

All lines of longitude meet at the North and South Poles.


Lines of longitude meet where?

Lines of longitude meet at the poles, both North and South. At the North Pole, all lines of longitude converge and meet at a single point. The same holds true for the South Pole, where lines of longitude also converge and meet at a single point.


How do you use lines of latitude and lines of longitude to find an absolute location on a map?

Lines of latitude indicate a location's distance north or south of the Equator, while lines of longitude show its distance east or west of the Prime Meridian. By identifying the intersection of specific latitude and longitude lines, you can pinpoint an absolute location on a map. The coordinates (latitude and longitude) provide a precise geographical reference for any point on Earth.


What is the highest longitude lines?

The highest longitude lines are the prime meridian at 0 degrees longitude and the 180 degrees longitude line. These lines mark the starting point for longitude measurements to the east and west, respectively.


What is the importance of the prime meridian?

The prime meridian, located at 0 degrees longitude, serves as the starting point for measuring longitude around the globe. It helps establish standardized time zones and provides a reference point for navigation and mapping. It also divides the Earth into Eastern and Western Hemispheres.


What are the reference point for latitude and longitude?

The reference point for latitude is the equator (0 degrees latitude), while the reference point for longitude is the Prime Meridian (0 degrees longitude) which runs through Greenwich, England. Latitude measures how far north or south a location is from the equator, while longitude measures how far east or west a location is from the Prime Meridian.


Why are lines of latitude and longitude useful to a geographer?

Lines of latitude and longitude allow a specific point to be located any where on the world.


Why are meridians also called lines of longitude?

Every point on a meridian has the same longitude.


At which point on the globe do the north-south geographic lines of reference converge after crossing the equator at right angles?

All of the meridians of longitude converge at the north and south poles.


How do you use latitude and longitude coordinates to find an absolute location on a map?

First, look on the map to find the line of latitude that the coordinates reference. If the exact line of latitude isn't shown on the map, estimate it by looking at the lines that are available. Then look on the map to find the longitude line that the coordinates reference. Once you have found the two lines, follow them both towards the point where they intersect. That is the location the coordinates reference.