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Recreational Mathematics
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Demonstrations 681  700 of 928
Three Polyhedra with Rectangular Nets
Lindgren's Dissection of a Pentagram into a Decagon
Folding and Unfolding Polyhedral Nets
Dissecting a Hexagram into Three Hexagrams
Dissecting a Dodecagram into a Triangle
Dissecting a Decagram {10/4} into Two Decagons
Polyhedra with Prismatic Symmetry
Symmetric Decompositions of a Rhombic Triacontahedron
Two Polyhedra with D2 Symmetry
Dissecting an Octagon into Four Smaller Octagons
Dissecting a Decagon into Two Pentagons and Two Pentagrams
TwoOctagonsintoOne Dissection in Two Steps
Freese's TwoOctagonsintoOne Dissection
Fermat's Magic Cube
Dissection of a Cube into Five Solids
Proposition 3, Book XII, Euclid's Elements
Magic Cube of Order 5
The 26Sided Unilluminable Room
Loculus of Archimedes
Cube Net
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