Because it is where east and west are measured from. Sort of like zero is neither positive nor negative.:)
!80 degrees east of Greenwich and then one crosses over to West Longitude
both .. longitude measures from north to south or from south to north the same with latitude.
118 degrees 15' W
Longitude lines connect the North and South Poles and measure distances east or west of Greenwich.
longitude: distance east or west on the earth's surface, measured in degrees from a certain meridian. (line from the North to the South Pole.)Or you can check out this website it has a lot on geography:See related link below
180 degrees is both east and west longitude. It doesn't matter which way you gofrom the Prime Meridian ... if you go 180 degrees, you arrive at the same longitude.
The degree of longitude east of 5 degrees west is 4 degrees west longitude.
For the same reason that your lawn is not above or below ground,or something like that.Zero and 180 degrees longitude form the boundary between east and west,so they are both, and they are neither.
Jamaica is entirely east of 80 degrees west longitude. The farthest west point on the island, southwest of Negril, is at about 78.4 degrees west.
East
East or west longitude?
Longitude lines measure how far (in degrees) you are East or West of the Prime Meridian (which is a longitude line that runs through Greenwich, England and is designated as 0° longitude).
Venezuela is a large country whose boundary, east to west, ranges from about 60 degrees west longitude to about 73 degrees west longitude.
Lima, the capital city of Peru, is located at 77 degrees West longitude.
121 degrees east longitude
Subtract the east longitude from 360, and you'll have the west longitude.
Longitude is measured in degrees east or west.