These are the lines you will drawn on a globe, running from east to west or north to south. Latitude The line drawn halfway between the poles is called the equator. Other lines parallel to the equator are called parallels, or lines of latitude. They are measured north and south of the equator to the poles. Every place has its own latitude. For example, Montreal, Canada, is 451/2 North; Buenos Aires, Argentina, is 34 1/2 South.
Longitude On globes, there are also lines running at right angles to the quator. These lines, all of which pass through the poles, are lines of longitude, or meridians. By international agreement, the prime meridian passes through Greenwich, a borough of London, England. The other lines of longitude are measured 1800 east and 1800 west of the prime meridian.