Hom. , who commonly joins it with στῆναι, στῆ δ' ὀρθός
Il. 23.271
, al., cf. Hdt. 5.111 , 9.22 (where it is used of a horse rearing); ὀρθαὶ τρίχες ἔσταν
Il. 24.359
, cf. Hes. Op. 540 ; ὀρθῶν ἑσταότων ἀγορή
Il. 18.246
; οἱ δ' ἐν νηί̈ μ' ἔδησαν . . ὀρθὸν ἐν ἱστοπέδῃ
Od. 12.179
, cf. S. Aj. 239 (anap.); κυρβασίας . . ὀρθὰς εἶχον πεπηγυίας
Hdt. 7.64
; ὀρθὸν αἴρεις κάρα
A. Ch. 496
, etc.;ὀρθὸν οὖς ἵστησιpricks up his ear, S. El. 27 , etc.; applied to theerectposture of man, Arist. PA 653a31 , al.;ὀ. θηρίον,of man, Philem. 3 ; of buildings,standing with their walls entire,
2. ὀ. γωνία rightangle, Pl. Ti. 55b ; soὀ.alone, Arist. EN 1098a30 , al.; cf.ὄρθιος v.
1 :τέμνειν πρὸς ὀρθάςto cutat right angles,
Euc. 3.3 , al.;εἴ τις δείξειεν ὅτι αἱ ὀρθαὶ οὐ συμπίπτουσι . .thatright anglesdo not meet (short for 'that two straight lines making, with a third, interior angles equal to two right angles, etc.'), Arist. AP 0.74a13 ;τὸ δυσὶν ὀρθαῖς the theorem that the angles of a triangle are together equal to two right angles,ib. 85b5 ;ὀρθὸς κῶνος, κύλινδρος,arightcone, cylinder, Archim. Sph.Cyl. 1.26 , 1.11 .
3. (with or withoutπτῶσις)nominative,Lat.casus rectus,opp. the oblique cases, D.T. 636.3 , Str. 14.2.28 , A.D. Pron. 39.10 , al., S.E. M. 1.177 .
V. ὀρθά active verbs,opp.ὕπτια(passive) andοὐδέτερα(neuter), Chrysipp.Stoic. 2.59 .
VI. ὀ. τόνος realorunmodified(cf. supr. 111.3 ) accent, opp.ἐγκλινόμενος,
A.D. Pron. 36.10 , al.; soὀρθὴ τάσιςib. 54.8 , al. (The gloss of Hsch. ,βορθ-αγορίσκοι,
= ὀ. , and the dialect forms ofὈρθεία(q.v.), suggest that the word orig. hadϝ.)
