PAL

Ptolemaeus Arabus et Latinus

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ὀρθὴ (γωνία) ‘right angle’

Greek. – Grammar: adj.

References: PH Heiberg: I.3:4, 74:15
Translated into:
Arabic: زاوية قائمة [PH Morelon: I.3:4, 19:12]
Modern translations:
English: right angle [PH Hamm: I.3:3, 47:2]