A.rectangle,Arist.de An.413a17 ; ὀρθό-ιος , ον, rectangular,Archyt. ap. Simp. in Cat.392.8 ; “τρίγωνον” Ti.Locr.98a, D.L.8.12 ; “κῶνος” Archim.Sph. Cyl.1Prooem.; ἐξὀρθογωνίου by rectangular measurement, PSI4.320.12 (i A. D.), POxy.2134.15 (ii A. D.).