The lines of longitude on a map goes from north-south
A map with parallel lines of latitude and longitude is known as a Mercator projection map. This type of map is often used for navigation purposes due to its representation of straight lines of latitude and longitude, making it easier to measure distances and plot courses. However, the Mercator projection distorts the size of landmasses, especially near the poles.
Lines of latitude indicate a location's distance north or south of the Equator, while lines of longitude show its distance east or west of the Prime Meridian. By identifying the intersection of specific latitude and longitude lines, you can pinpoint an absolute location on a map. The coordinates (latitude and longitude) provide a precise geographical reference for any point on Earth.
grid lines of longitude and latitude
The critical rule for reading a map to determine grid coordinates is to first determine the longitude (vertical lines) and then the latitude (horizontal lines) on the map that intersect at the point of interest. The grid coordinates are then expressed as a combination of the longitude and latitude lines.
lines of equal longitude, a.k.a. meridians
On a map, longitude lines go up and down, AKA vertically. Latitude lines are horizontal lines on a map.
longitude
There can be various lines on a map, but the ones you are probably thinking of are 'latitude' and 'longitude'.
That's the vertical lines.
Longitude lines.
Latitude and longitude
Lines of longitude and longitude
The lines that intercept latitude lines are lines of longitude.
A map with parallel lines of latitude and longitude is known as a Mercator projection map. This type of map is often used for navigation purposes due to its representation of straight lines of latitude and longitude, making it easier to measure distances and plot courses. However, the Mercator projection distorts the size of landmasses, especially near the poles.
Longitude lines go up and down on a map.
Lines that run up and down on a map are called "longitude lines" or "meridians." These lines help indicate the east-west position or direction of a location on the Earth's surface.
The cartographer, publisher, or printer of the map does that.