The northern and southern hemispheres each have 360 degrees of longitude.
The eastern and western hemispheres each have 180 degrees of longitude.
You can use as many or as few 'lines' as you want, to mark off any number of degrees.
equator and hemisphere
one degree, about 111 kilometers at the equator.
there are ninety lines in each hemisphere There are 90 degrees of latitude in the northern Hemisphere, and another 90 in the southern one. There are 180 degrees of longitude in the eastern Hemisphere, and another 180 in the western one. In each hemisphere, you're free to draw as few or as many lines in that range of numbers as you want to see. There's no standard set of 'lines' that everybody must use. Some maps and globes have more lines on them, some have fewer, some don't have any at all. Would you go into the hardware store and ask the man "How many lines are there on the tape measure ?" ?
The equator (0° latitude) divides the Earth into the Northern Hemisphere and the Southern Hemisphere. The Prime Meridian (0° longitude) divides the Earth into the Eastern Hemisphere and the Western Hemisphere.
Longitude lines in the eastern hemisphere are labeled with an E for east, indicating their position relative to the Prime Meridian. The Prime Meridian, located at 0 degrees longitude, serves as the starting point for measuring eastward and westward distances on the globe.
Lines of latitude measure the distance north or south of the equator, dividing the Earth into Northern and Southern Hemispheres. Lines of longitude measure the distance east or west of the Prime Meridian, dividing the Earth into Eastern and Western Hemispheres. By using the intersection of these lines, we can determine which hemisphere a place is located in.
The Prime Meridian, which is 0 degress longitude.
There are four hemispheres on Earth: Northern Hemisphere, Southern Hemisphere, Eastern Hemisphere, and Western Hemisphere. These divisions are based on lines of latitude and longitude that run across the Earth's surface.
It is known as the Eastern Hemisphere, with lines of longitude easterly from the Prime Meridian (zero longitude) to the Datum Line of 180 degrees longitude. In the opposite direction from the Prime Meridian is the Western Hemisphere. To the north of the Equator is the Northern Hemisphere, and to the south of the Equator is the Southern Hemisphere.
Locations in the western hemisphere are described with a range of 180 degrees of"west longitude" ... exactly what you'd expect for 1/2 of a sphere. Within that range,you're free to draw as few or as many 'lines' on your map as you feel you need.
5 or 6 lines of longitude
The prime meridian separates the Eastern Hemisphere from the Western Hemisphere on Earth. It is the line of longitude designated as 0°, from which all other lines of longitude are measured.