Exactly the same as the reason for marking numbers on houses, and then adding numbers
to the street-name signs where streets intersect.
It establishes a system for telling other people where you're located, and for navigating
from where you are to where you want to be.
Each 'meridian' is a line of constant longitude.
Lines of latitude and longitude allows any position on the Earth to be plotted.
longitude
Lines of latitude and longitude allow a specific point to be located any where on the world.
No , Lines of Latitude and Longitude are not rays because they do not go on infinitely (forever). They are only imaginary lines that exist on Earth.
John Harrison
lines of latitude
latitude?
Each 'meridian' is a line of constant longitude.
Latitude.
Every meridian of longitude is perpendicular to every parallel of latitude, and every parallel of latitude is perpendicular to every meridian of longitude.
Latitude and longitude
The lines that intercept latitude lines are lines of longitude.
Lines of Longitude
Every parallel of latitude crosses every meridian of longitude.
Longitude lines go vertically and latitude lines go horizontally.
Lines of latitude and longitude allows any position on the Earth to be plotted.