「Modifications: the bird base on a square」
diagrams in variation
% We will introduce the deformations of the bird base on a square, before those of the frog base... %
The following examples of deformations [at interval of 1.25°] are given through the [traditional] folding methods, those are based on the results appeared in the milestone book by Husimi, K. and M.:
"Origami no kikagaku [Geometry in Origami]" (in Japanese), Nippon-Hyoron-Sha, Tokyo (1979).
On the deformation given by Prof. K. Husimi:

and
On the other deformation given by Prof. K. Husimi:

and
On the deformation given by Mr. J. Maekawa:

and
Note that every diagram in Maekawa's type admits the bird - in some deformation - can spread its wings along the traditional folding method in Origami.
References:
投稿者: kaishonashi
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