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George Beck
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Demonstrations 1  20 of 131
Iteratively Reflecting a Point in the Sides of a Triangle
New this month
Wythoff's Icosahedral Kaleidoscope
Blood Spatter Trigonometry
Insphere and Four Exspheres of a Tetrahedron
Cross Ratios in the Complex Plane
Inverting a Point in the Osculating Circles of a Curve
Differences of the Union of Two Arithmetic Progressions and Christoffel Paths
Passing a Cube through a Cube of the Same Size
Vertex and Edge Truncations of the Platonic Solids
Locus of Points Definition of an Ellipse, Hyperbola, Parabola, and Oval of Cassini
A Path through the Lattice Points in a Quadrant
Triangulating Random and Regular Polygons
Set Partitions Match Restricted Growth Functions
0/1Polytopes in 3D
Rolling a Cube on a Chessboard
Cylinder Area Paradox
Haberdasher's Problem
Dandelin Spheres for an Ellipse
Reflecting a Regular Polygon across Its Sides in the Hyperbolic Plane
How to Avoid a Collision
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