This program uses animation to introduce three problems involving shrinking polygons. The program also explores a model of the platonic solids, showing how these first prompted Kepler to consider the problems of shrinking polygons. Produced by the Open University. (25 minutes)

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Part of the Series : Introduction to Pure Mathematics

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		Calculating Pi This program demonstrates how infinite series provide a method for evaluating pi to a large number of decimal places relatively easily. Produced by the Open University. (24 minutes)(more details)		DVD $99.95
		Pi and e This program defines numbers like pi and e as the limits of a monotonic sequence. Produced by the Open University. (25 minutes)(more details)		DVD $99.95
		Conics in Perspective All conic sections can be found as slices of some cone and are therefore perspectively equivalent. In this program, this result is used to prove an interesting theorem in two-dimensional geometry. Produced by the Open University. (25 minutes)(more details)		DVD $99.95
		Symmetry Counts This program introduces the idea of symmetry of three-dimensional objects, including a review of the symmetry of two-dimensional figures. Produced by the Open University. (25 minutes)(more details)		DVD $99.95
		Affine Geometry This program demonstrates how theorem-proving becomes easier when geometers have access to affine geometry. Produced by the Open University. (25 minutes)(more details)		DVD $99.95

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