Penrose triangle pendant (1)

Pendant representing a [Penrose triangle](https://en.wikipedia.org/wiki/Penrose_triangle) (impossible figure). Of course, since it's impossible, it looks like a Penrose triangle only from one point of view. From other points of view the trick becomes evident (curved edges).

On the back side there are two variable-diameter holes for attaching the rope. Take a thin synthetic rope, put its end into fire and immediately pull on the molten end so that it becomes long and thin. Then insert the end into the hole, drag it through the hole using pliers, tie a knot, cut the extending end and pull the knot back into the hole.

Designed in OpenSCAD. Ad-hoc support structures provided.

See also versions [(2)](https://www.thingiverse.com/thing:4098760) and [(3)](https://www.thingiverse.com/thing:4098781).