How is longitude and longitude maesured?

It tells you how far east or west you are from an imaginary line that runs from the north pole to the south pole and that passes through Greenwich, near London, England. You get up to 180 degrees...

They're both angles used to locate points on the Earth's surface.Other than that, they don't relate at all, in the sense that a changeof one coordinate doesn't change the other one.

Zero degrees longitude, sometimes called the Greenwich Meridian after the observatory in Greenwich England where the system of latitude and longitude was worked out. The happy accident is that the...

On the equator, it's roughly 69.1 miles (111 km). At the poles, it's zero.Anywhere in general, it's 69.1 miles (111 km) multiplied by the cosine of the latitude.

0 = Greenwich Meridian 180 = International Date Line (with a few small exceptions)