Which is the Latitude and which the Longitude?

Answer 1

The one that measures the angle from the equator and is tagged 'north' or 'south'

is the latitude.

The one that measures the angle from the Prime Meridian and is tagged 'east' or 'west'

is the longitude.

Answer 2

latitude runs east to west longitude runs north to south

Answer 3

Lines of latitude run east-west.

Lines of longitude run north-south.

Answer 4

Latitude refers to the distance north or south of the equator, while Longitude refers to the distance east or west of the Prime Meridian.