Question

explain why lines of longitude are called Meridian of longitude ​

Answer 1

Answer:

Longitudes are known as meridians because in Geographical sense, meridians are great circles which are not parallel to each other but intersect each other at the North and the South Poles. Same stands true of the longitudes. Alllongitudes are great circles which meet at the Poles.

Answer 2

Answer:

Lines of Longitude intersect the equator at right angles but end at the North and the South Poles. The lines that run between the North and the South Poles are called Lines of Longitude, or meridians. The line at zero degrees longitude is called the prime meridian.

the line of longitude is called meridian only at equator because their the longitude is zero degree

and the zero degree longitude is known as meridian....