Because all of the longitudes converge in a single point, at both the north and
south poles. When you stand at a pole, you're standing on every longitude.
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Lines of Longitude meet/intersect at the North & South Poles ONLY.
The shortest possible distance is along a meridian of constant longitude (a due north-south line).That distance is 69.1 miles (111.22 km).
All longitudes converge at the north and south poles. To look at it another way,the north pole is located at 90 degrees north latitude and every longitude.
The lines of latitude provide vertical (north-south) coordinates on a map or globe. Lines of longitude provide horizontal (east-west) coordinates. The defined geographical point is where the latitude line intersects the longitude line.
on a world map - the curved parallel lines are lines of latitude and longitude. They geographic co-ordinates. These coordinates values are measured in degrees, and represent angular distances calculated from the center of the EarthThese coordinates values are measured in degrees, and represent angular distances calculated from the center of the Earth. EAST TO WEST/WEST TO EAST - lines of latitude All lines of latitude are parallel to the Equator, and they are sometimes also referred to as parallels. Parallels are equally spaced. There are 90 degrees of latitude going north from the Equator, and the North Pole is at 90 degrees N. There are 90 degrees to the south of the Equator, and the South Pole is at 90 degrees S NORTH TO SOUTH/SOUTH TO NORTH - lines of longitude There is no obvious 0-degree point for longitude, as there is for latitude. Throughout history many different starting points have been used to measure longitude. By international agreement, the meridian line through Greenwich, England, is currently given the value of 0 degrees of longitude; this meridian is referred to as the Prime Meridian. Longitude values are indicate the angular distance between the Prime Meridian and points east or west of it on the surface of the Earth.