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Solid Geometry
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Demonstrations 101  120 of 526
Reshetov's Unistable Polyhedra with 14, 15, 16, and 17 Faces
Menger Sponge Slices
A OneParameter Family of Polyhedra with Two Kinds of Symmetries
Constructing Vector Geometry Solutions
Dissection of Two Stellated Dodecahedra
26Piece Dissection of a Cube
Dissection of a Concave Rhombic Triacontahedron
Dissection of a Cube to a Quarter of a Rhombic Dodecahedron of the Second Kind
Fractal Tetrahedron in an Octahedron
Two Proofs that the Volume of the Regular Octahedron Is Four Times the Volume of the Regular Tetrahedron
80 Golden Rhombohedra
Symmetries of a Prism
Proposition 30, Book XI, Euclid's Elements
Proposition 29, Book XI, Euclid's Elements
Kaleidocycles
Inverting the Rhombic Dodecahedron
Expanding Cube
Volume of the Regular Tetrahedron and Regular Octahedron
How FivePetal Flowers Grow on a Rhombic Triacontahedron to Become a Rhombic Hexecontahedron
Filling a Regular Icosahedron with Infinitely Many Golden Octahedra
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