Question

What is prime meridian?

Answer 1

prime meridian is a meridian in a geographical coordinate system at which longitude is defined to be 0degrees . together prime meridian and it's antimeridian form a great circle.

Answer 2

The prime meridian is the line drawn north to south at 0° (0 degrees) longitude. Credits: NASA. an imaginary line on Earth that passes north to south through the Greenwich Observatory in London, England. Sentences: The prime meridian divides Earth into the Eastern Hemisphere and the Western Hemisphere.