Zeno also attacked Euclid's proof of the equality of right angles on the grounds that it presupposes the existence of a right angle.

Proclus also says that an Epicurean (almost certainly Zeno but Proclus does not name him) claimed that Euclid assumes that every curve is infinitely divisible, but again this cannot be deduced from the axioms.

[H]is aim was to give substantial arguments against mathematics supporting the anti-mathematical beliefs of Epicurus.