{"book":"adl0290","page":360,"text":"۳۵۳\n(۴) در مثلث قائم الزاویه قاعده ۵۴ اینچ و عمود\n۲۵ اینچ است پس مساحت آن را در بسوه\nمعلوم کنید :\n(۵) در مثلث قائم الزاویه قاعده ۳۹۰ گز و عمود\n۸۱۰ گز است پس مساحت آن را در جریب\nمعلوم کنید :\n۱۳ ذو اربعة الاضلاع\nو دیگر اشکال\nشکل پنج ضلع را ذواربعة الاضلاع و شکل پنج\nضلع را مخمس و شکل ۶ ضلع را مسدس\nمیگویند و علیٰ ہذا القیاس :\nطریق دریافت نمودن مساحت این چنین\nاشکال این ست که آنها را در چند مثلث تقسیم\nکنید و مساحت آنها را معلوم نموده همه را جمع\nکنید حاصل جمع مساحت مطلوب خواهد بود :\nمثال ا ب ج د ذو اربعة الاضلاع\nمیباشد ا ج ۸۰ گز و عمود از راس زاویه ب","chars":549,"image":"https://storage.googleapis.com/adl-page-images/adl0290/00360.jpg","first_page":1,"last_page":1089,"title":"ʻIlm-i ḥisābعالم حساب","permalink":"https://afghanpress.org/book/adl0290/360","canvas":"https://afghanpress.org/iiif/adl0290/canvas/360","source":"https://afghanistandl.nyu.edu/books/adl0290/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0290_download.pdf","rights":{"image":{"statement":"Public domain. NYU states: \"All works presented on this website are, unless otherwise indicated, in the public domain. The images available on this website may be freely reproduced, distributed and transmitted by anyone for any purpose, commercial or non-commercial.\"","uri":"http://rightsstatements.org/vocab/NoC-US/1.0/","holder":"New York University Libraries","source":"https://afghanistandl.nyu.edu/about.html","delivery":"Images are served from a copy mirrored by this project, not from NYU's servers, under the reproduction terms above.","endorsement":"This is an independent project. It is not affiliated with, endorsed by, or reviewed by New York University."},"text":{"statement":"Machine-generated transcription, dedicated to the public domain under CC0 1.0. No warranty of accuracy: see the provenance block on every page.","uri":"https://creativecommons.org/publicdomain/zero/1.0/","holder":"Steps Ventures"}},"provenance":{"text_produced_by":"gemini-3.1-pro-preview","thinking_level":"low","read_completed":"2026-08-09","per_page_confidence":null,"per_page_confidence_note":"Not recorded during the corpus run. No calibrated per-page score exists, and none is estimated here.","human_reviewed":false,"accuracy_context":"Roughly two thirds of characters agree with a modern printed edition of the same text. Much of the disagreement is editorial, not misreading. Treat the transcription as a finding aid and read the page image before quoting.","primary_source":"The page image. The text is an index into it."}}