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.
90 degrees
The prime meridian is located at 0 degrees longitude.
its either 180 degrees latitude, 0 degrees latitude, or 0 degrees longitudethe answer is 0 degrees
90 degrees west longitude
The Prime Meridian is at zero degrees longitude and every possible latitude.
The prime Meridian is 0 degrees longitude.
The prime meridian is a line at 0 degrees longitude.
Morocco
The longitude of every point on the Prime Meridian is Zero.
longitude
180 degrees