200 kiểu gấp giấy origami
Folding optimal polygons by David Dureisseix I have looked at various ways of folding the "optimal" pentagon & hexagon (the largest regular hexagon within a square of paper). Additive constraints are a mathematically exact construction, a finite number of operations (no iterative method) and, of course, a folding sequence as simple as possible. Hexagon 1. The corner B comes in B' on the medium vertical line. This allows us to built the intersection F of the fold AE with the diagonal BD. Reverse the model. 2. Fold D onto F. 3. Resuming the construction to get the optimal hexagon is also easy.
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