Loading 3D model
You are seeing a 360° image instead.
Connection error. Please try again.
Sorry, the model can't be displayed.
Please check out our FAQ to learn how to fix this issue.
It looks like your browser or this site is blocking some scripts or cookies necessary to properly display the viewer.
Or visit the Help Center for more information:
string circuit polyhedra 3D Model
Three polyhedra are used to trace string figure paths, visiting each edge exactly once. These are called Eulerian circuits, and they work because the polyhedra have an even number of edges (4) at each yellow vertex. See if you can trace the paths by color. You can turn the whole scene around and study each shape if you want.