§57b.1Fr. 57b
Οὗ καὶ αὐτοῦ Θ. ἐν τῷ περὶ τῶν Ποσαχῶς μέμνηται, οἷον ἐπίστασθαι πᾶν τρίγωνον ὅτι δυσὶν ὀρθαῖς ἴσας ἔχει τὰς τρεῖς γωνίας· ἢ γὰρ ὡς καθόλου ἢ ὡς καθʼ ἕκαστα πάντα.
This itself is also mentioned by Theophrastus in his On the Number of Ways Something is Spoken of; for example, knowing that every triangle has its three angles equal to two right angles; for it is either as a universal or as all particular things.