Ancient Greek had a large impact on scientific and mathematical language and thinking leading into the Enlightenment period and beyond. But "ancient Greek" could refer to any dialect spanning a period of hundreds of years. Today, the Ancient Greek taught e.g. in Greece is Koine Greek (I believe), and this aligns with e.g. Aristotle who was obviously hugely influential in Medieval and Enlightenment thought, so I would assume this is the dialect that would have been taught to budding scientists and mathematicians like Newton. But I'm looking for some type of reference which can clarify what was taught and when?

=Edit= Correction: Koine Greek was Roman, Attic Greek was used in Athens so that seems to align more with Aristotle and Enlightenment ideals.