define prime meridian
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Answer:
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
➪The parallels of latitude are unequal in length and all the meridians are of equal length. Thus, it was difficult to number the meridians. Hence, all
countries decided that the count should begin from the meridian which passed through Greenwich, England, where the British Royal Observatory is located.
➪This meridian is called the Prime Meridian. Its value is 0° longitude. The Prime Meridian divides the earth into two equal halves, the Eastern Hemisphere and the Western Hemisphere. 180° East and 180° West meridians are on the same line.