I mean the structure of the way later writers refer to Euclid. Apparently, from Wikipedia, "ὁ στοιχειώτης" but I hope an improved discussion/potential rabbithole occurs if we know whether that unambiguously translates to one male author.
Yes, it unambiguously translates to one male. That question is easy. A literal translation would be something like "the Elements guy".
But it doesn't mean the author was one male. Lots of texts have attributed authorship. The Homeric Hymns are attributed to "Homer". The Gospel of Luke is attributed to "Luke".
