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Historical Mathematics
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Demonstrations 21  40 of 394
Hexagrammum Mysticum
Descartes's Method of Evaluating the Principal Cube Root
Powered Clique Polyhedra
Kepler's Harmonices Mundi
Minimally Squared Rectangles
Possible Counterexamples to the Minimal Squaring Conjecture
Mrs. Perkins's Quilts
Pocket Calculator
Factorizing Mersenne Numbers
Two Dürer's Foliums
Generating Arithmetic Expressions
The Bouniakowsky Conjecture
A Visual Proof of Thales's Intercept Theorem
Euclid's Formula and Properties of Pythagorean Triples
Fate of the Euler Line and the NinePoint Circle on the Sphere
Ramanujan's Strange Formula for Pi
Tetrahedron Centers
Mondrian Art Problem
Vega's Tables of Common Logarithms to Seven Decimals
The Klein Configuration
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