## Tuesday, April 26, 2011

## Thursday, April 14, 2011

## Monday, April 11, 2011

## Sunday, April 10, 2011

This is a Klein diagram by Francisco Lara-Dammer that represents A5, the group of symmetries of the icosahedron.

A pattern showing the result of six levels of recursion using the "inflation rules" of Penrose tiles. By L. Kerry Mitchell.

## Thursday, April 7, 2011

A visual proof by Kürschák that a regular 12-sided polygon inscribed in the unit circle has area 3. This means that estimating π to be 3 is like saying a circle is a Dodecagon.

## Tuesday, April 5, 2011

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