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Recreational Mathematics
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Demonstrations 21  40 of 1054
Roulette (Epitrochogon) of a Regular Polygon Rolling around Another Regular Polygon
The Bouniakowsky Conjecture
Factory for Fractiles of Order Four
Two Equidecomposable Triangles
Dissection of a Spherical Triangle into Three Spherical Triangles around a Spherical Hexagon
Dissection of Three Regular Spherical Pentagons into Five Equilateral Spherical Triangles
SwingandTwist Hinged Dissection of One Regular Heptagon into Seven
Gerwien's Simultaneous Dissection of Three Triangles of Same Area
Generating 9Flips
SwingandTwist Hinged Dissection of One Regular Heptagon into Eight
Polar Plots Drawn by a Mechanical Linkage
Dissection of an Octagram into Five Octagrams
Optical Illusion of the Extra Piece
Dissection of a Spherical Square into Two Spherical Regular Pentagons
Hanegraaf's Dissection of a Truncated Octahedron into a Hexagonal Prism
Tetrahedron Centers
Bertrand's Box Paradox
Hinged Dissection of a Regular Heptagon into Eight Smaller Ones
Hinged Dissection of a Hexagram into Seven Smaller Ones
Dissection of a Regular Dodecagon into Six Smaller Ones
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