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Izidor. Hafner
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Demonstrations 421  440 of 896
Dudeney's Step Dissection of a Rectangle to a Square
Deduce the Net for an Octahedral Die
Calculating Logarithms with a Series
Two Dissections of a Mitre to a Gnomon
SwingandTwistHinged Dissection of an Octagon to Two Octagons
TwistHinged Dissection of One Pentagon to Four
PianoHinged Dissection of an Ellipse to a Heart
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
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