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Solutions de différents problèmes de géométrie, accompagnées de figures. Il y a parfois des titres (faṣl, ou, f. 183v, muqaddima). F. 189, il est dit qu'un des problèmes a été résolu par Abū Bakr al-H̱alīl (cf. nos XVI, XIX).
Incipit :
فی مداخل الاشکال المتشابهة او المتوافقة — هرکاه که دو معشر متساوی الاضلاع والزوایا متساوی السطوح رسم کند (...)
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