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Recreational Mathematics
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Demonstrations 101  120 of 910
Four Polyhedra, Each with an Unfolding that Overlaps Itself
Deduce the Net for a Die's Net
Two Dissections of the Letter E to a Square
A TwistHinged Dissection of Triangles
Lindgren's Dissection of a Quadrilateral to a Triangle
Make Mazes on a Moebius Strip
Dissection of One Quadrilateral to Another
Water Colors Puzzle
Dudeney's Step Dissection of a Rectangle to a Square
Deduce the Net for an Octahedral Die
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
TwistHinged Dissection of One Parallelogram into Another with the Same Angles
Dissection of a Regular Pentagon into Three Pentagons
Two Dissections of a Mitre to a Square
Dissection of One Triangle to Another
Hinged Dissection of One Pentagon to Five Pentagons
TwistHinged Dissection of Squares
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