You're on the right track, but don't get hung up on 'lines'. Longitude is the angle
from the Prime Meridian east or west to the place of interest.
equator , prime merdian
prime merdian
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It is latitude lines. this is all from my geography class. hehehe
That's the "Prime Meridian".
Mexico is west of the Prime Meridian (0° of Longitude).
Prime Meridian.
lines of longitude are lines drawn north and south and measure east and west a famous line of longitude is the Prime meridian
Lines of longitude, also known as meridians, measure the distance east or west of the Prime Meridian, which runs through Greenwich, England. They help determine a location's position in terms of longitude on the Earth's surface.
Longitude measures the distance east and west of the prime meridian.
Longitude lines measure how far (in degrees) you are East or West of the Prime Meridian (which is a longitude line that runs through Greenwich, England and is designated as 0° longitude).
Longitude