Which imaginary lines are based on the equator?

The imaginary lines are longitude the distance east or west of the Greenwich meridian (=an imaginary line from the top of the Earth to the bottom), measured in degrees and minutes. Latitude is the distance north or south of the equator.

Ongitude. the distance east or west of the Greenwich meridian (=an imaginary line from the top of the Earth to the bottom), measured in degrees and minutes. Latitude is the distance north or south of the equator.