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Ed Pegg Jr.
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Demonstrations 21  40 of 312
The Circles of Descartes
AnglePath
Chromatic Spindles
Discrepancy Conjecture
3D UnitDistance Graphs
Interval Visibility Graphs
EarthMoon Problem
Thickness2 Graphs
Two Enumerations of the Rationals
Loeschian Spheres
Halving a Triangle Perimeter
Permutations, Lehmer Code, and Lexicographic Index
Pentagon Tilings
Semigraceful Eulerian Graphs
Some Polyhedra with Identical Triangular Faces
Seven Touching Cylinders Puzzle
The Tetartoid
Octahedra Constructed from Eight Identical Triangles
The Lucas Magic Square
Complex Quadratic Residues
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