¶ Dymaxion Airocean World Map
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Index Entry
"surface grids uniformly subdivided by interior triangles and squares. This collapsing may be accomplished by ‘loosing’ the unit apex centers of the tetrahedrons and quadrahedrons while holding the vertex positions of the squares or triangles and allowing the radii to ‘dangle’ parallel to one another with their loosed terminals in one place.
"Uniform subsidence of the spherical arc segments of the major spherical triangles and squares of the spherical projection lattice into plane geometry sections of squares and triangles is accomplished by concentric shrinking to the chordal plane in such a manner that the right-angle relationship of all interior points in respect to the enclosing sides remains intact. It is the retention of the interior perpendicularity of points to enclosing sides that makes the hinging of the triangles and squares possible in a manner that, at the same time, does not disproportionate or refract the contours of areas partially occurring on adjacent triangles or squares.
“It is also this method of uniformly progressive concentric correction by subsidence from spherical segment to plane geometry which provides the unique characteristic of this”
