It is simply an agreed upon reference point. It is arbitrary, and in the past each country defined its own. French sailors, for example, used a prime meridian that ran through Paris. Great Britain's dominance of the seas is probably the reason that the Greenwich Meridian came to be so widely accepted as the standard reference.
The Prime Meridian is defined as Zero Longitude. Any longitude that you feel is "close" to zero is close to the Prime Meridian.
The Prime Meridian is at zero degrees longitude and every possible latitude.
The point at which the equator (0° latitude) and the Prime Meridian (0° longitude) intersect has no real significance but it is in the Atlantic Ocean, about 380 miles (611 kilometers) south of Ghana and 670 miles (1078 km) west of Gabon.Source: About.com
its either 180 degrees latitude, 0 degrees latitude, or 0 degrees longitudethe answer is 0 degrees
Geographers call the 0-degree line of longitude the Prime Meridian. This line runs through Greenwich, England and serves as the starting point for measuring longitude.
The Prime Meridian is defined as Zero Longitude. Any longitude that you feel is "close" to zero is close to the Prime Meridian.
The Prime Meridian is at zero degrees longitude and every possible latitude.
The Prime Meridian is zero degrees longitude.
0 degree longitude is is called the Prime Meridian.
The point at which the equator (0° latitude) and the Prime Meridian (0° longitude) intersect has no real significance but it is in the Atlantic Ocean, about 380 miles (611 kilometers) south of Ghana and 670 miles (1078 km) west of Gabon.Source: About.com
The longitude of the Prime Meridian, by international definition and agreement, is zero (0°). .Every point on the Prime Meridian has a different latitude, and every latitude on Earthhas a point on the Prime Meridian.
Prime meridian
the prime meridian(:
its either 180 degrees latitude, 0 degrees latitude, or 0 degrees longitudethe answer is 0 degrees
Geographers call the 0-degree line of longitude the Prime Meridian. This line runs through Greenwich, England and serves as the starting point for measuring longitude.
The longitude of every point on the Prime Meridian is Zero.
The prime meridian in located at 0 degress longitude, and passes through Grenich, England.