All of us in real life have a deal with some mechanisms which execute some motion. Few days ago I meet the article How to draw a straight line using Peaucellier inersor (example of this mechanism).
After all I thought that it's easy to construct any polyhedron using some mechanisms like this, but what about one mechanism (one means there is no parts , consists of other inversors).
My question is : is it possible to construct another geometry body, for example triangle.