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Recreational Mathematics
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Demonstrations 1  20 of 1256
Lattice of Borromean Rings
New this month
Biggest Little Polyhedron
Updated this month
Billiard Ball Fredkin Gate
Two Stellations of the Rhombic Triacontahedron
Three Interpenetrating Golden Bricks
Japanese Theorem for Three Tangent Circles and a Triangle
Nonogram from Photo
Theobald's HeptagontoHexagon Dissection
Exact Trilinear Coordinates and the Euler Line
Exact Trilinear Coordinates and the Brocard Axis
Hamiltonian Path on a Polyhedral Net
Simultaneous Diophantine Equations for Powers 1, 2, 4 and 6
Two Ways to Fold a Net into a Triangular Dipyramid
A FourPower Diophantine Equation
Rotation Symmetries of Prisms
Cubes on a Rhombic Hexecontahedron
Icosidodecahedron as a Common Element
Fifteen Great Circles on a Sphere
Cluster of 30 Cubes
Magic Hexagon
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