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|Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny|
|Interactive proofs (elementary geometry, barycentric coordinates, complex numbers, Ceva's theorem, affine geometry) of the fact that the three medians of a triangle meet at a point called the centroid. See also The medians, contributed by Scott Brodie.|
|Levels:||High School (9-12), College|
|Resource Types:||Web Interactive/Java|
|Math Topics:||Vectors, Imaginary/Complex Numbers, Affine Geometry, Triangles and Other Polygons|
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