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Historical Mathematics
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Demonstrations 261  280 of 306
Egyptian Multiplication
Enumerating the Rationals
Swinging Double SliderCrank
TitiusBode Law
Epicycloid
Rolling Wheel with Spoke
The ChowRuskey Order 5 Venn Diagram
Classical Approximations of Pi
The Bouniakowsky Conjecture
Chronological Interpretation of Mayan Numerals
Collatz Paths
Goldbach Conjecture
Angles in a Triangle Total 180 Degrees
Recursion in the Ackermann Function
Sum of Three Triangular Numbers
Prime Gaps
Doubling a Distance with a Compass
Polyhedra, Spheres, and Cylinders
Reverse Collatz Paths
3n+1 Graph
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