Ptolemaeus Arabus et Latinus

`_`	(the underscore) is the placeholder for exactly one character.
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At the beginning and at the end, these placeholders are superfluous.

διὰ τῶν γραμμῶν ‘by geometrical methods’

Greek

Translated into:
References:	Alm. Heiberg: I.10, 42:20
Arabic:	بطريق الخطوط [Alm. MS Tunis: ]
Arabic:	من حساب المساحة (والتقدير) [Alm. MS Leiden: f. 7v]
Modern translations:
English:	by geometrical methods [Alm. Toomer: 54]