Question

Define the equtor and prime meridian

Answer 1

An equator is defined as :: An equator is the intersection of the surface of a rotating spheroid (such as a planet) with the plane perpendicular to the axis of rotation


And prime meridian is defined as :A prime meridian is a meridian in a geographical coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its antimeridian form a great circle