Directory of Map Projections

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Adams world in a square II




Meridians: Central meridian is straight. The 180th meridians are straight lines bent at the equator. Other meridians are complex curves.
Parallels: Equator is straight. Other parallels are complex curves.
Poles: Points in opposite vertices.
Symmetry: About the central meridian or the equator.


Great area distortion near the 180th meridians or at higher latitudes. Conformality fails at the poles and at the intersections of the 180th meridians with the equator.


Novel whole-world maps.

Similar projections

See note under Adams projection of the World in a Square I.


Presented by Oscar Sherman Adams (1874–1962) of the U.S. Coast and Geodetic Survey in 1925.

Description adapted from J.P. Snyder and P.M. Voxland, An Album of Map Projections, U.S. Geological Survey Professional Paper 1453. United States Government Printing Office: 1989.