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Izidor Hafner
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Demonstrations 361  380 of 809
Kempe's Multiplicator
Kempe's Translator
Peaucellier's and Hart's Inversor
Newton's Pi Approximation
TwoCube Calendar
Reconstruction of Vega's Prime Number Table
Dissecting a Latin Cross into a Greek Cross
Rational Functions Quiz
A WideTieCrosstoSquare Dissection
Decomposing a Regular Polygon with an Odd Number of Sides into Rhombuses and Triangles
Hanegraaf's Dissection of a Nonagon into a Triangle
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
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