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The reference line of longitude is the Prime Meridian, which is designated as 0 degrees longitude. It runs from the North Pole to the South Pole and passes through Greenwich, England. Longitude is measured in degrees east or west from the Prime Meridian, extending up to 180 degrees in either direction.

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Which longitude line is at 0 degrees?

The Prime Meridian is defined as the zero reference of longitude.


Which line reference line for longitude?

The Prime Meridian, located at 0 degrees longitude, is the reference line for longitude. It runs from the North Pole to the South Pole and passes through Greenwich, London. Longitude lines, or meridians, measure the distance east or west of the Prime Meridian up to 180 degrees.


What are the reference point for latitude and longitude?

The latitude and longitude references are lines, not points. The reference for latitude is the line that forms a circle and consists of all points with zero latitude. That line is called the "equator". The reference for longitude is the line that forms a semi-circle and consists of all points with zero longitude. That line is called the "Prime Meridian".


Is prime meridian the reference line for latitude?

No. There's a point on the Prime Meridian at every possible latitude in existence.The only thing constant about the Prime Meridian, and its definition, is that everypoint on it has zero longitude.


Does 90 degrees west longitude have a name?

No. 90 degrees longitude is not a major line of longitude. Only 0 and 180 degrees longitude, which are the Greenwich Meridian and the International Date Line respectively, are major lines of longitude.


Is the prime meridian a line of latitude or a line of longitude?

The Prime Meridian is a line of longitude, and it sits at 0 degrees longitude.


The line of longitude that is zero degrees longitude is the?

prime meridian :/


What is the maximum number of degrees of longitude?

The maximum longitude is 180°, at any point on the line directly opposite the Prime Meridian. (The line which, combined with the Prime Meridian, forms a complete circle around the Earth and through the poles.)


What is the main line of longitude?

By international agreement, the line that defines the origin of longitude is the Prime Meridian. It joins the north and south poles and passes through the Royal Observatory at Greenwich, England.


What longitude line is the prime meridian located?

The prime meridian is located at 0 degrees longitude.


What longitude is 59 degrees west of International Date line?

121 degrees east longitude


What degrees of longitude is the international date line on?

Whether travelling to the West or to the East from the Prime Meridian (zero Longitude) the International Date Line is 180 degrees Longitude.