AuthaGraph is an approximately equal-area world map projection invented by Japanese architect Hajime Narukawa[1] in 1999.[2] The map is made by equally dividing a spherical surface into 96 triangles, transferring it to a tetrahedron while maintaining area proportions, and unfolding it onto a rectangle. The map substantially preserves sizes and shapes of all continents and oceans while it reduces distortions of their shapes, as inspired by the Dymaxion map. The projection does not have some of the major distortions of the Mercator projection, like the expansion of countries in far northern latitudes, and allows for Antarctica to be displayed accurately and in whole.[3] Triangular world maps are also possible using the same method. The name is derived from "authalic" and "graph".
