Interlocked Closed and Open Linkages with Few Joints

To accompany Folding and Unfolding in Computationall Geometry: Part I: Ch.10.2.
Last Update:

Illustration of the "hard" case of Theorem ?: An open 3-chain cannot lock with a triangle.

EPS: tri3.pull.eps

(Figures by Dessislava Michaylova and Joseph O'Rourke)