「Modification: fish bases on "darts" and "kites"」
diagrams in variation

Fish bases as modified on darts[wedges] in deformation

Fish bases as modified on kites in deformation

From darts[wedges] to kites in deformation
[Based on the method of folding modified bird bases given by Mr. J. Maekawa in the book:
"Origami no kikagaku [Geometry in Origami]" (in Japanese), Nippon-Hyoron-Sha, Tokyo (1979). The expressions, "dart" and "kite" for quadrilateral regions above, come from the names for two types of tiles appeared in the articles on Penrose tiling.]
References:

0