It reduces the distortion of the Mercator projection at higher latitudes. Mollweide This projection is also equal-area. The central meridian is a straight line at right angles to the equator and all other parallels. Because the parallels are curved there is less distortion in the 'corners' of the world than in the similar-looking Mollweide. Here, the central meridian is half the length of the equator.
Parallels are straight lines, equally spaced and equally subdivided.
This projection is equal-area but suffers from great distortion in the 'corners' of the world. This projection is equal-area. It is an oblique case of the Hammer projection. It is used principally for distribution maps in the temperate latitude zones. This is a pseudo-cylindrical projection.