Likewise until around the second century BC and the time of Hipparchus ( c . 194-120 BC ) the Babylonian general division of the circle into 360 degrees and their sexagesimal system was unknown.
12.
Historian Roger L . Cooke points out that Proclus does not make any mention of Mesopotamian influence on Thales or Greek geometry, but " is shown clearly in Greek astronomy, in the use of sexagesimal system of measuring angles and in Ptolemy's explicit use of Mesopotamian astronomical observations ."
