114. Any outline, no matter what dimensions or shape it has, may be
turned upon a center and in that way made to take a great number and
variety of attitudes. Not only may it be turned upon a center but
inverted upon an axis. Being inverted, the inversion may be turned upon
a center and made to take another series of attitudes, and this second
series of attitudes will be different from the first series, except
in cases of axial symmetry in the outline or area. It must be clearly
understood that a change of attitude in any outline or area is not a
change of shape.
115. What has been said of Harmony, Balance, and Rhythm in the
attitudes of a line applies equally well to outlines and to the spaces
defined by them.