Erich's Packing Center
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Erich Friedman  
A huge collection of packing problems, each explained with graphics. 2D examples include Triangles in Squares, Circles in Squares, Squares in Squares, Triangles in Triangles, Circles in Triangles, Squares in Triangles, Triangles in Circles, Circles in Circles, and Squares in Circles. Also animations (Rectangles in Squares, Circles in Rectangles), and 3D packings (Cubes Into Cubes, Spheres Into Cubes, Packing Polyominoes); other packing problems (Harmonic Series of Polygons, Geometric Series of Polygons, Tiling Squares with Squares, Packing Pythagorean L's), and combinatorial geometry problems (Minimizing Maximum Rectangles, Tree Planting Problems, Maximizing Squares).  


Levels:  Middle School (68), High School (912), College 
Languages:  English 
Resource Types:  Graphics, Problems/Puzzles 
Math Topics:  Combinatorics, Convex/Discrete Geometry, HigherDimensional Geometry, Polyhedra, Conic Sections and Circles, Triangles and Other Polygons, Symmetry/Tessellations 
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