{"book":"adl0131","page":99,"text":"کتاب ٨٨\n\nو ح د وغیره بسازید پس در کل محیط انقسم شش وتر دایره جا\nیعنی اندرون دایره مسدس منتظم بسازیم پس یک ضلـ\nبرابر نصف قطر خواهد بود-\nخطوط مستقیم ف ب و ب د و د ف را یکجا کنید پس\nمثلث متساوی الاضلاع خواهد بود-\nفرض کنید که نصف قطر دایره یک انچ است وف د را در الـ\nکردن مطلوب داریم پس عبارت مذکور یک مثال فعلـ دا\nم مرکز دایره را دریافت کرده م الف را یکجا کنید که از خط ٢\nبر نقطه ک تقاطع کند-\nظاهر است که اک = ١/٢ : ب ک = ١/٢ * ٣/٣ = ١/٢ ٣ پس\n= ٣، و از عمل جذر تا هفت مراتب بکسور عشاریه ب ف = ا\n١،٧٣٢٠٥٠٨ پس معلوم شد که نصف قطر دائره یک نظر را\nاندرون دائره مذکور مثلث متساوی الاضلاع ساخته از","chars":587,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00099.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/99","canvas":"https://afghanpress.org/iiif/adl0131/canvas/99","source":"https://afghanistandl.nyu.edu/books/adl0131/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0131_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."}}