Answer:
Longitude
Explanation:
The distance that is measured east and west from the Prime Meridian is called longitude. The longitude can be measured both as a time and as a distance. There's 180 degrees east, and 180 degrees west from the Prime Meridian. The lines that have been invented by the people to better measure the longitude, both in practice and on a map are the meridians. The meridians are vertical lines, and they connect the North Pole and the South Pole. These are also the lines that have determined the time zones used by the people.
