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Izidor Hafner
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Demonstrations 381  400 of 818
TwistHinged Dissection of One Octagon into Four Octagons
Hinged Dissection of One Pentagram into Five Pentagrams
Langford's Dissection of Five Pentagons into One Pentagon
TwistHinged Dissection of Two Attached Squares into One Square
TwistHingeable Dissection of a WideTie Cross to a Square
TwistHingeable Dissection of an Ellipse into a Heart
Dissecting a Trapezoid into a Parallellogram
Hinged Dissection of a Decagon into Two Pentagons and Two Pentagrams
Dissecting a Generalized Greek Cross to a Square
Lewis Carroll's Curve
Hinged Dissection of a Cross into a Square
Dissecting One Equilateral Triangle into Seven
Folding a Net into an Octahedron Or Two Tetrahedra
Dissecting a Square into a Sphinx
Dissection of Two {8/2}Prisms into One
Dissecting an Equilateral Triangle into Three Smaller Ones
Dissecting a Decagon into a Pentagram and Two Pentagons
Dissecting a Cross of Lorraine into a Square
Faces of the Regular Icosahedron and Five Regular Tetrahedra
Vega's Second Calculation of Pi
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