The 3 facts about meridians:
1. Move from north to south.
2. Calculate how far east or west of the prime meridian you are.
3. They Are closest together at the poles and furthest apart at the equator.
What is a meridian in geography?
A meridian is a line that connects locations of equal longitude in geography and geodesy. It is the angle (in degrees or other units) to the east or west of a certain prime meridian (currently, the IERS Reference Meridian). It is, in other words, a longitude line. The longitude of a point and its latitude expressed in angular degrees north or south of the equator, determine its location along the meridian.
Eratosthenes established the first prime meridian in 200 BCE. Due to the lack of a latitude measurement, this prime meridian was utilized to measure the earth but encountered several issues. The geographical meridian has many sites since each nation has its own rules on where the prime meridian should be. This led to inconsistency