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Demonstrations 101  120 of 345
Hinged Dissection of a Decagon into Two Pentagons and Two Pentagrams
Dissecting a Generalized Greek Cross to a Square
Hinged Dissection of a Cross into a Square
Dissecting One Equilateral Triangle into Seven
Dissecting a Square into a Sphinx
Dissection of Two {8/2}Prisms into One
Dissecting a Decagon into a Pentagram and Two Pentagons
Dissecting a Cross of Lorraine into a Square
Traffic Jam: A Sliding Block Puzzle
Triangle Mysteries
The Knight's Tour
The Seven Bridges of Königsberg
Disk to Oval Seat Tops II
How Triple Powers of Integers Begin and End
Disk to Oval Seat Tops
Dissecting a Globular Greek Cross to a Square
Rasa Puzzle
Pentahex Puzzles
Hinged Dissection of a Pentagram to a Decagon
Haberdasher's Problem
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