Double triangle "is not only the name of the base form. Another name - "water bombs" - comes from the figures from this basic form. In the basic form of the "double triangle" two visible old song triangular plane. Closed ("deaf") angle formed at the center of the original square. There are several ways to fold this base form coca way you prefer, and use those. Evolve, and do not forget the dream.

the basic form of the «double triangle» scheme origami m1,2the basic form of the «double triangle» scheme origami m3

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