Poly is a program for investigating polyhedral shapes. Poly can display polyhedral shapes in three main ways:

- as a three-dimensional image,
- as a flattened, two-dimensional net, and
- as a topological embedding in the plane

The three-dimensional images may be interactively rotated and folded/unfolded. Physical models may be produced by printing out the flattened two-dimensional net, cutting around its perimeter, folding along the edges, and finally taping together neighboring faces.

Using Poly is fairly intuitive, so there is no need to post a tutorial about it. You can download Poly here.

Note: The text above was copied from the Poly readme file.

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