In the minds of the people who draw and print the maps,
and of the people who read them.
Lines of latitude are called parallels. The lines start at the equator and are located north and south of the equator.
Lines of latitude and longitude allow a specific point to be located any where on the world.
the equator
There are 2 major lines of latitude located north of the equator. The Tropic of Cancer is located at 23.5 degrees north latitude while the Arctic Circle is located at 66.5 degrees north latitude.
The center of the ACT Legislative Assembly Building is located at 35.2817° south latitude 149.1312° east longitude.
From what I can remember, the latitude line located at 0 is the meridian line. But I can be wrong
The tundra biome is primarily located in the Arctic Circle, generally between 60°N and 75°N latitude. This region experiences long, cold winters and short, cool summers with minimal precipitation.
Lines of latitude run east-west as circles parallel (or horizontal lines) to the equator. Latitude measures the angle in degrees north or south from the equator where the equator is located at 0 degrees.
The north and south poles are at 90° latitude, and ALL longitudes meet there so longitude at the poles is irrelevant. Honestly, it's much easier to discuss these things if you forget about "lines".
The lines that intercept latitude lines are lines of longitude.
The equator is located at 0 degrees latitude. The angle of latitude starts at 0 at the equator and ends with +90 and -90 degrees at the North and South poles, respectively. Lines of latitude are parallel to each other.
Bluebeth: I think you mean the Equator. Hope I helped :-)