A theory of pure design

by Denman Waldo Ross

ATTITUDES

LINES IN DIFFERENT ATTITUDES

87. Any line or linear progression may be turned upon a center, and so made to take an indefinite number and variety of attitudes. It may be inverted upon an axis, and the inversion may be turned upon a center producing another series of attitudes which, except in the case of axial symmetry in the line, will be different from those of the first series.

Fig. 112

In this case the line changes its attitude.

Fig. 113

In this case I have inverted the line, and turning the inversion upon a center I get a different set of attitudes.