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