At Right Angles - March 2013

In this issue we showed how to make an origami skeletal dodecahedron using paper but without the use of scissors or adhesives. We also showed how a well-known identity for the sum of the cubes of the natural numbers generalizes in a non-obvious way. Next we had an article on PIE – the Principle of Inclusion and Exclusion. Following that we had an article on Harmonic Triples. Next, we had a review of one of Polya’s most famous books. We started a new series on Problem Solving in Geometry. In ‘Tech Space’ we focused on problem solving using Geogebra.
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