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Historical Mathematics
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Demonstrations 1  20 of 374
A Visual Proof of Thales's Intercept Theorem
Updated this week
Euclid's Formula and Properties of Pythagorean Triples
New this month
Fate of the Euler Line and the NinePoint Circle on the Sphere
New this month
Ramanujan's Strange Formula for Pi
Tetrahedron Centers
Mondrian Art Problem
Illustrating Kepler's Conjecture on Sphere Packing
Vega's Tables of Common Logarithms to Seven Decimals
The Klein Configuration
Babylonian Algorithm for Computing Square Roots
Gettysburg!
Marquand's Representation of Boolean Functions
Factorizing Mersenne Numbers
Using Bernoulli's Formula to Sum Powers of the Integers from 1 to n
Lewis Carroll's Diagrams
Duffin's Sequence for Pi
The 196 Algorithm, ReorderandAdd Algorithm, and RATS Sequence in Different Bases
Golomb Rulers and Fibonacci Sequences
Pál Joints
Cassini Ovals
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