Maths Epic Fails

Image credit: Theodor de Bry, public domain, via Wikimedia Commons.
Ptolemy’s Geocentric Model
Ptolemy, a mathematician famous for his wrong model.

Image credit: public domain via Wikimedia Commons.
Aryabhatiya of Aryabhata
Even the wise are not free from error: Aryabhata, a 5th- 6th-century Indian mathematician, made a silly mistake in his book Aryabhatiya; he defined the square incorrectly.