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Recreational Mathematics
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Demonstrations 781  800 of 1012
Proposition 3, Book XII, Euclid's Elements
Magic Cube of Order 5
The 26Sided Unilluminable Room
Loculus of Archimedes
Cube Net
Golden Spiral
Letter Products
Bilinski's Vase
Deriving a Bilunabirotunda from Rhombic Solids
Cube Packing
Two Operations on Rhombic Solids
Gematria (Letter Sums)
Pandigital Olympic Circles Puzzle
Dissection of Two Truncated Octahedra into a Cube
Hanegraaf's Dissection of a Truncated Octahedron into a Hexagonal Prism
Dissection of a Cube into Two Kinds of Triacontahedra
Dissection of Three Bilunabirotundas and a Dodecahedron into Rhombic Solids
Proof of Proposition 28, Book XI, Euclid's Elements
Another Dissection of Two Rhombic Solids into an Icosidodecahedron and a Rhombicosidodecahedron
Dissection of the Oblate Golden Rhombohedron
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