Lines of Coincidence

Line of Coincidence is where things converge along a line. They must contribute to the harmony of your composition.

The lines can be arcs series of arcs, strait lines, or series of strait lines. Ellipses can also be considered lines of coincidence.

In particular Ellipses  are helpful from above the sculpture composition!

See Points of Coincidence

Using a scaffolding built in rectangles we can begin to design with precision. 

See Armature of the Rectangle.  With the Armature of the Rectangle we can begin to get a notion of harmonics in our works.