The definitive Greek text of Ptolemy’s Mathematical Treatises was compiled by the Danish historian J L Heiberg at the end of the nineteenth century.
A complete pdf scan of the Greek text (with an extensive introduction — in Latin, of course) can be found here .
Below, an excerpt of the text of Book VII, section i, which you can download or print.
(Click on the icon to the far right of the top bar to rotate the image.)