im pretty sure that lines of longitudeend at the north and south poles.
meridians or lines of longitude
"Lines" of constant longitude are "meridians".
All of the longitude "lines" merge at the north and south poles, so you might say that they 'start' at one of these points and end at the other one. If the question means to ask: "Where is the line of zero longitude ?", then the answer is: The origin of longitude is defined as the Prime Meridian, an imaginary line between the north and south poles that passes through the Royal Observatory in Greenwich, England.
Lines of longitude, or meridians.
Parallel lines, by definition, cannot meet. The lines of longitude meet at the Poles.
-- Every meridian of longitude crosses the equator, and every other parallel of latitude. -- Every meridian of longitude has one end at the north pole. -- Every meridian of longitude has the other end at the south pole. The meridians don't 'pass through' the poles, because every one of them stops there.
lines of longitude are lines drawn north and south and measure east and west a famous line of longitude is the Prime meridian
Vertical lines parallel to the prime meridian are lines of longitude.
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.
The South Pole is the end point for all lines of longitude -- as is the North Pole -- so all lines meet at both poles. The South Pole is located on the Antarctic continent.
5 or 6 lines of longitude
Longitude lines run from pole to pole.