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Demonstrations 101  120 of 879
Ptolemy's Spheres
Calculating the Area of a Country Using Green's Theorem
Glass Slide Reflectance from Vector Amplitudes
Proposition 30, Book XI, Euclid's Elements
Proposition 29, Book XI, Euclid's Elements
Edit Distance
Europe Vote Exponent
Asylum in the United States
Tilt of the Earth
Parabolograph
Celestial Navigation
Tube Fan with Adjustable Blades
Car Steering with a Trapezoidal Mechanism
Möbius Triangles
Hirano's Construction of a Regular Pentagon
Branched Pipe Connection
Campanus's Sphere
Scuderi Split Cycle Engine
Pole Figures in Crystallography
Single and Multibank Engines Using FourStroke Cycle
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