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Izidor Hafner
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Demonstrations 601  620 of 1025
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
Vega's Calculation of Pi
Disk to Oval Seat Tops II
Dissecting an EvenSided Regular Polygon into Rhombuses
Disk to Oval Seat Tops
Leonardo's Dissection of a Motif to a Rectangle
Dissecting a Globular Greek Cross to a Square
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