Fig. 8. Derivation of "harmonic" dimensions A and B from a given dimension C: (a) assign circles in Figure 7 the proportion of C; (b) the proportion A will derive from points of intersection between blue circles (radius C) and diagonals of square; (c) draw two concentric red circles of radius A; (d) tangent line to red circles A determines point B on the perpendicular axis line of the square (drawing : Center for the Study of Architecture). return to text