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Ternary Pentagonal Flexagon

Ternary flexagons are those whose map has three cycles. For symmetry reasons, using regular pentagons, here are only two ternary flexagons, which can be called cis-ternary and trans-ternary, from the viewpoint of chemical nomenclature. In the cis- form, the two secondary rings are adjacent; in the trans- form, they are separated.