Twist-hinged dissection of an square to equilateral triangle

twist-hinged dissection of square to equilateral triangle (8)

Twist-hinged pieces

Partially and cyclicly fliped-hinged dissection of square to triangle (4) Hinged dissection of square to triangle (4)

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Reference :

Frederickson,Greg N (2002). Hinged dissections : Swinging & twisting.

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