Question

What are parallels of latitude and meridians of longitude?

Answer 1

• Parallels of latitudes: All of the imaginary circles parallel to the Equator are called parallels of latitudes. These circles have varying centres and all these central points lie on the same line: the axis of the earth.
  
• Meridians of longitudes: All of the imaginary circles perpendicular to the Equator are called meridians of longitudes. These circles have the same centre, which is also the centre of the earth.