Parallels and meridians, respectively.
latitude lines is another name for parallels and longitude lines are called meridians
For Maps, it is latitude and longitude.
Each 'meridian' is a line of constant longitude.
A Parallel - because they are imaginary lines that run around the earth parallel to the equator
Lines of longitudes are also called Meridians. These vertical lines are drawn from the North to South poles.The meridian through Greenwich, England, called the Prime Meridian, was set at zero degrees of longitude. The meridian on the opposite side of the earth from Greenwich is called the International Date Line (IDL), which is at roughly 180° longitude.
A line of constant longitude is often called a "meridian". A line of constant latitude is often called a "parallel".
longitude
0 longitude is the prime meridian. 0 latitude is the equator.
There are no parallels of longitude, because longitudinal lines aren't parallel. We call them "meridians". Lines of latitude ARE parallel, and so the expression "45th parallel" would be an accurate description.
The special name given to lines of latitude is "parallels," and the special name given to lines of longitude is "meridians." These lines form a grid system that helps in locating any point on the Earth's surface.
another name for a line of longitude is meridian.
Lines of Latitude encircle the Earth horizontally, and are parallel to the Equator. Lines of Latitude are intercepted by Lines of Longitude. Lines of Longitude run vertically from the North Pole to the South Pole. The Prime Meridian is zero longitude and passes through the Greenwich Observatory, Greenwich, London, England.