the prime meridian
Lines of longitude are imaginary vertical lines that represent the angular distance, in degrees, minutes, and seconds, of a point east or west of the Prime Meridian (Greenwich). Lines of longitude are often referred to as meridians. The lines of longitude run from the North pole to the South pole and at the poles all the lines of longitude intersect at a single point.
meridians or lines of longitude
Longitude are the vertical lines found in a map or globe while latitude are the horizontal lines.
They are lines of longitude and latitude, often just longitudes and latitudes.
"Lines" of constant longitude are "meridians".
Lines of longitude, or meridians.
Parallel lines, by definition, cannot meet. The lines of longitude meet at the Poles.
Vertical lines parallel to the prime meridian are lines of longitude.
lines of longitude are lines drawn north and south and measure east and west a famous line of longitude is the Prime meridian
The highest longitude lines are the prime meridian at 0 degrees longitude and the 180 degrees longitude line. These lines mark the starting point for longitude measurements to the east and west, respectively.
Longitude lines run from pole to pole.
5 or 6 lines of longitude