-- If the line is straight through the center of the Earth, then it's
the Earth's axis of rotation.
-- If the line is marked on the Earth's surface and stops at both poles,
then it's a meridian of longitude.
Lines of latitude are imaginary lines used to measure distances north and south of the Equator or 0 degrees.
The lines that run north and south are called meridians of longitude. (The north and south poles are the ends of every meridian, so each one only goes half-way around the globe.)
The imaginary parallel lines that run east-west are called lines of latitude. These lines measure the distance north or south of the equator and are used to establish the location of a place on the Earth's surface.
Lines of longitude.
Imaginary lines that run north to south are known as lines of longitude. Longitude lines are the imaginary lines running through the Earth between the North and South Poles. They are arbitrary and used for reference so everyone can know where they are in the world. The lines running north and south are called "meridians" or "lines of longitude."
lines of longide
Lines of latitude are imaginary lines used to measure distances north and south of the Equator or 0 degrees.
parallel lines, or lines of latitude.
latitude
primemeridean
The lines that run north and south are called meridians of longitude. (The north and south poles are the ends of every meridian, so each one only goes half-way around the globe.)
longitudinal lines run north/south; Latitudinal lines run east/west
These are known as lines of longitude or meridians
The equator is the origin (the zero) of latitude.
Measured by imaginary lines numbered in degrees
Meridians
Lines of longitude.