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Solid Geometry
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Demonstrations 141  160 of 558
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
Framing a Rhombic Dodecahedron with Regular Octahedra
Cubic Symmetry Types
SixPiece Dissection of a Tetrahedron into Its Mirror Image
Snub Tetrahedron
Volume of a Cylindrical Hoof
Dehn Invariant of Some Disjoint Unions of Polyhedra with Icosahedral Symmetry
The Volume of the Regular Octahedron Is Four Times the Volume of the Regular Tetrahedron
Coloring Polyhedra with Four Colors
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