A meridian of longitude is an imaginary line that runs?

Answer 1

A meridian of longitude is an imaginary line that joins the north and south poles.

For every imaginable latitude, there's point on the meridian with that latitude, and

all of the points on it have the same longitude.

Answer 2

from the North Pole to the South Pole, connecting all points along the same longitude. It helps define the east-west position of a location on Earth's surface. The prime meridian, located at 0 degrees longitude, divides the Earth into Eastern and Western Hemispheres.

Answer 3

From the North pole to the South pole.