from west to east and not from north to south
Parallels are lines that go up and down the map, latitudes are lines that go across the map from side to side.
The lines are parallel on the map are called Latitudes.
The horizontal lines are called latitudes and the vertical lines are called longitudes.
On a polar projection, lines appear as straight lines that radiate outward from a central point (the pole). These lines represent constant latitudes, with the pole at the center of the map. The further away from the center, the greater the distortion in terms of shape and size.
We draw equidistant horizontal and vertical lines at given intervals.We can label the lines longitudes and latitudes respectively
lines appear on the ground. A map is a representaion of the ground, you cannot make more ground appear by drawing a map.
They could be: Latitudes and longitudes, Gridlines, Isobars, isotherms, contours, National or regional boundaries.
The map you are referring to is likely the Mollweide projection. It is an equal-area projection that represents latitudes as straight parallel lines and longitudes as elliptical arcs. This projection aims to minimize distortion in terms of area, but distorts shapes and distances.
grid
Lines of latitude do not appear on all types of maps, The other parts do appear on most maps.
On a map of average annual temperature why are the lower latitudes so much warmer than the higher latitudes?
90 north latitudes + 90 south latitudes + 1 line of equator