Octahedral Trinja Star
Pictures copyright by PhotoArt Studio Hörby
This model was built in Januari 2020 and its dimensions is around 8.5 cm x 8.5 cm x 8.5cm.
This polyhedron only consists of regular heptagons that are folded over a diagonal and for this polyhedron the folding is done in a 'W' shape:
The polyhedron has the same rotational symmetry as a cube, i.e. without the reflections. I like these kind of symmetries where the reflections are missing. I found Nemesis first, then I understood that the heptagons were organised in triplets around a star with three points. Later I found and built tetrahedral and cube variants as well. I also suspected that it would be possible to arrange the heptagons in stars of four instead of stars of three and indeed I could lead my numerical search program to such a solution.
Here is the model in a different position:
Last Updated
2020-02-16