The 87.72138° West meridian. It's the one that goes through my house.
I can think of only 2; GMT and the International Date Line.
Longitude lines go vertically and latitude lines go horizontally.
The prime meridian is a line of longitude
The most important lines of longitude and latitude are the equator, the prime meridian, tropic of Cancer, tropic of Capricorn and the international dateline.
A 'line' can be drawn on a map or globe at any longitude or any latitude.There is no standard set of 'lines'.To me, I'd say the most important ones are the parallel of 42.0363° north latitudeand the meridian of 87.7208° west longitude, since those are the ones that bringme [close to] home at night.
Lines of latitude and longitude are most important in determining state borders in the western region of the US, where states are often more geometrically shaped and boundaries are defined by specific lines of latitude and longitude.
The lines aren't measured at all, except possibly in the process of printing the map.It's the longitude that needs to be measured, and lines are often printed on mapsin order to make that job easier. Longitude is an angle, so it's described in angle units,most commonly in degrees.If you see a line on a map, every point on the 'line' has the same longitude, so there'snothing on the line to measure.
The north-south lines of a grid are called meridians, or lines of longitude. These lines run from the North Pole to the South Pole and help determine a location's east-west position on the Earth's surface.
The lines of longitude are represented in green on most maps and globes.
Probably the longitude and latitude lines because they help you locate countries and cities.
The Equator is the most important latitude line as it divides the Earth into the Northern and Southern Hemispheres. The Prime Meridian is the most important longitude line as it serves as the starting point for measuring both east and west longitudes.
The lines of longitude.