Alexandr Rodchenko was a painter.  His painting techniques could be considered a basis for architecutural thought and design development.  By using a compass and a straight edge to geometric figures, Rodchenko created space within a two dimensional plane.  To Rochenko, painting did not exist as a simple color representation of reality, but rather an element of spatial structure.  The line and the plane formed these spaces.

The line links what goes before to what follows into a single organism.  It functions as a boundary, an edge or a skeleton forming the frame.  A line signifies passage, movement, collision, connection and intersection.  When a designer takes a line and places it within the three dimensional, that line becomes as least one of the above depending on the nature of its task.

The plane represents construction.  It is the projection of a feasible real structure.  Either planes derive forms by acting independently or by merging together.  If a plan moves forward or backward, its projection may be left behind.  This is a decision to be made by the designer.