That's the 'Prime Meridian'.
The imaginary line at zero degrees longitude is the Prime Meridian. The imaginary line halfway between the poles is the Equator. The Equator is zero degrees latitude.
The Prime Meridian.
Prime Meridian
All the points on Earth with zero longitude go together to form the imaginary line called the "Prime Meridian".
the prime meridian
The imaginary line at zero degrees longitude is called the Prime Meridian. It is the starting point for measuring east and west and passes through Greenwich, London.
This imaginary circle is called the prime meridian. it is an imaginary line that circles the globe vertically and is typically measured as beginning in Greenwich, England.
prime meridian :/
0 degress latitude is the Equator and 0 degress longitude is the Greenwich Meridian.
0 degrees is the equator, the imaginary line that divides the Earth into the Northern Hemisphere and the Southern Hemisphere. 0 degrees longitude is the Prime Meridian, the starting point for measuring longitude and the line that divides the Earth into the Eastern Hemisphere and Western Hemisphere.
The longitude of every point on the Prime Meridian is Zero.
The prime meridian is a line at 0 degrees longitude.