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Ed Pegg Jr
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Demonstrations 21 - 40 of 380
Horizontal and Vertical Line Tests
Bad Fraction Simplification
Dice Transitivity
General Parabola Equation
Four-Point Parabolas
Percentages are Reversible
Apollonian Edge Circles
Magic Squares and Designs
The Set of Sets in SET
Wichmann Columns
Plain Bob Bell Ringing
Patterns from de Bruijn Sequences
Multiple Nets of a Triangular Dipyramid
Sparse Rulers
Observed Distribution of Random Chord Lengths in a Circle
Wichmann-like Rulers
Lighthouses
The Statue of Regiomontanus
Mondrian Four-Coloring
Melting Tile Illusion
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