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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.

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14y ago
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13y ago

The Prime Meridian.

The Prime Meridian is an imaginary line which runs from the North Pole to the South Pole.

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12y ago

The main line of longitude is the 87.72098th West meridian.

It's the one that goes through my house.

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9y ago

The reference or primary line of longitude is at zero degrees. This line is known as the Prime Meridian or the Greenwich Meridian located at the Royal Observatory in Greenwich, London.

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13y ago

i dont no

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Q: What is the main line of longitude?
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Related questions

Main line of latitude?

Prime meridian, from which longitude is measured both east and west, is the main line of longitude.


What is the main line for longitude?

prime meridian


What is line of longitude?

A Line of longitude is an invisible line going north to south on the earth. The main one is called the prime meridian.


Which city does the main line of longitude begin?

Greenwich, England


Is the equator is a main line of longitude?

The equator is the origin for the lines of latitude


What is the imaginary line traveling from north to south?

The main North/South line of longitude is the Prime Meridian.


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.


What is a longitude lines?

Lines of Longitude are imaginary lines that run from the North Pole to the South Pole. The main line of longitude, the Prime Meridian (zero longitude), passes through the Greenwich Observatory, London, England.


Which line of longitude is found opposite of the Prime Meridian?

The major line of longitude located at 180 degrees longitude is the International Date Line.


Is the prime meridian the latitude line?

No, its the longitude line. Its 0 degress longitude.


Is 104 degrees west a line of longitude or latitude?

104W is a longitude line. Anything labelled as "E" or "W" is longitude.


How are line of longitude also called?

A line of constant longitude is often referred to as a 'meridian'.