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MAA Found Math 2011 - Week 42


MAA Found Math: Reuleaux triangles on the facade of The Basílica i Temple Expiatori de la Sagrada Família in Barcelona, Spain. Photo by F. J. Craveiro de Carvalho (University of Coimbra).

Send your Found Math photos with a brief description to

It's that time of year again. Start carving your mathematical pumpkins! Snap a photo and send it to
The best photo will be featured on our Halloween MAA Found Math page.

Watch a slideshow of MAA Found Math