Fig.
1 - John Hejduk, Grandfather Wall House, 1966-76. Canadian Center for
Architecture.
The drawing is published by Richard Pommer in his essay "The structures
of the imagination", which appeared on the pages of "Art in America" in
1978. The original drawing in the archives of the CCA.
.

Fig.
2 - John Hejduk, Wall House 1
Fig.
3-4 - Left: Piet Mondrian, Studio for lozenge, 1921. Right: Theo
Van Doesburg, Study for Counter-composition VI, 1924.

Fig.
5 - John Hejduk. Diagrams relating to the isometric representation of
the lozenge configuration and its relationship with the diagonal.
In Mask of Medusa (1985)
Fig.
6-7 - Left: Wladislaw Strzeminski, Architectural composition 9c, 1929. Right: Vilmos Huszar, Composition
6, 1918.

Fig.
8 - Ludwig Mies, Haus Ulrich Lange, 1935.
Fig.
9-10 - Left: Series of diagrams illustrating the (one) compositional
process of the Haus Ulrich Lange. Right: Complete general series
of diagrams.
