Which of the following is not a postulate of Euclidean geometry?

The fact that all right angles can be bisected is not a postulate of Euclidean geometry.
Euclidean geometry is the classical form of geometry first described by Euclid in his work Elements. He gathered all the mathematical knowledge known to the Greeks at the time, today his work presents itself as the first known axiomatization in the history of mathematics.
Originally, it was only cultivated on a plane and in three-dimensional space, at the same time linking it with the physical world that it was supposed to describe, thus preventing the possibility of studying other varieties of geometry.
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