The power of form applied to geometric tracery : one hundred designs and their foundations resulting from one diagram (1851)
Billings, Robert William, 1813-1874 · W. Blackwood and Sons · leaf 129
c. … The repetition of one curve may almost be said to form this, our concluding example,for the curves numbered 3, 4, 5, <5, 7, 8, are all of one radius.
Decoration and ornament · Geometry in art · Geometry in architecture · Architectural design · Form (aesthetics) · Geometrical drawing
Internet Archive · Clark Art Institute Library · Public Domain Mark 1.0. Free to use for anything.