Latitude
Longitude.
The Prime Meridian
That is the Prime Meridian, and it runs through Greenwich England.
90 degrees
90 degrees west
The line of longitude for a place that is halfway between the prime meridian and the 80th line of longitude and west of the prime meridian would be -40 degrees longitude. The prime meridian is at 0 degrees, and halfway between 0 and 80 is 40 degrees. Since the location is west of the prime meridian, the longitude would be measured as negative.
The starting place for measuring longitude is at zero degrees and is called the Prime Meridian. It runs through Greenwich, London, UK.
The word "meridian" is usually used in place of "line of longitude. " An example of a sentence using the word "meridian" is "The Prime Meridian is the meridian that passes through Greenwich, England and marks 0 degrees of longitude. "
To determine the longitude of a place, you need to find the meridian on which it is located. This meridian is known as the prime meridian, which is the line of longitude designated as 0°. By identifying the prime meridian and calculating the distance to the location's meridian, you can determine its exact longitude.
A location that is 30 degrees south and 45 degrees east is in the Southern and Eastern Hemispheres. It is 45 degrees east of the Prime Meridian, which is the starting point for measuring longitude. The coordinates specify the exact position of the location on the Earth's surface in relation to the equator and the Prime Meridian.
90 degrees west
Whether you travel 180 degrees East of the Prime Meridian or 180 degrees Westof it, you arrive at the same place either way . . . half-way around the globe.