Ptolemaeus Arabus et Latinus

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ὀρθογώνιον ‘lit. rectangle, it denotes multiplication between two line segments’

Greek. – Grammar: adj used as noun.

Translated into:
References:	Alm. Heiberg: I.10, 33:6
Arabic:	سطح / السطح القائم الزوايا [Alm. MS Tunis: ]
Arabic:	سطح [Alm. MS Leiden: f. 6r]
Modern translations:
English:	lit. rectangle, it denotes multiplication between two line segments