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József Kürschák proved that a dodecagon (a regular 12 -sided polygon) inscribed in the unit circle has area 3. He split the dodecagon into triangles and moved one quarter of them to complete three unit squares.[more]
Drag all the controls to the right to move the triangles.[less]
Contributed by: Sándor Kabai and Ferenc Holló Szabó (March 2011)
Additional contributions by: Ralf Schaper
Open content licensed under CC BY-NC-SA
For more information, follow this link about József Kürschák.
Wolfram Demonstrations Project
Published: March 7 2011