Watt Parallel Motion
To accompany Folding and Unfolding in Computational
Geometry:Part I: Ch.4.1.2: Watt Parallel Motion: Fig.14
A Watt linkage.
Joints x and y are pinned. Joints a and b are
free. The locus of point c is the figure 8-curve.
Created with Cinderella
Applet created by Joseph O'Rourke.