Question

What is Prime Meridian?
What is Grid?


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Answer 1

Answer:

Prime Meridian: a planet's meridian adopted as the zero of longitude.

Grid: a pattern of straight lines that cross each other to form squares

Answer 2

Answer:

• The prime meridian is the line of 0 longitude, the starting point for measuring distance both east and west around the Earth. The prime meridian is arbitrary, meaning it could be chosen to be anywhere. ... They chose the meridian passing through the Royal Observatory in Greenwich, England.
• A grid is a network of intersecting parallel lines, whether real or imaginary. ... Grid can also refer to a physical network of sorts, not necessarily made of straight or parallel lines. You may be familiar with the high voltage electrical cables that carry power throughout the country, known as the national grid.
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