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Izidor Hafner
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Demonstrations 401  420 of 869
Decomposition of Some Polygons to IsoPenta Triangles
TwistHinged Dissection of One Parallelogram into Another with the Same Angles
Dissection of a Regular Pentagon into Three Pentagons
Efficiency of Some MachinLike Formulas
Two Dissections of a Mitre to a Square
Dissection of One Triangle to Another
Hinged Dissection of One Pentagon to Five Pentagons
Nets of Polyhedra with Texture
TwistHinged Dissection of Squares
Three Dissections by Leonardo da Vinci
Folding a Dissection of a 1by3 Rectangle into a Cube
Dissection of a Regular Decagon into Three Pentagrams and Eight Pentagons
Dissection of a Latin Cross into a Square
Dissection of Five Equilateral Triangles into One
Dissection of a Regular Decagon into Two Pentagrams and Six Pentagons
TwistHinged Dissection of a Regular Polygon into a Polygram
Dissection of a Sphinx into a Triangle
Deduce the Net for a Die
Euler's Estimate of Pi
Cylinder Area Paradox
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