{"book":"adl0131","page":181,"text":"کتاب ۱۷۰ مساحت\n\nاضلاع مثلث ها که در ذیل اند قطر دایره های اندرون مثلث هائی\nذیل را دریافت کنید۔\n(۴۶) ۹۹ و ۱۱۳ و ۴۰۱ (۴۷) ۱۲۲ و ۱۸۲ و ۲۰۰\n(۴۸) ۲۵۷ و ۲۹ و ۴۲۵ (۴۹) ۴۰۱ و ۷۲۹ و ۶۶۵\n\n(۵۰) ارتفاع یک مثلث ۸ فٹ است و مجموعه هر دو ضلاع ۲۷ فٹ\nو فرق ہر دو حصص قاعده و فٹ اند پس قاعده و ضلاع\nمثلث مذکور را معلوم کنید۔\n(۵۱) مجموعه اضلاع یک مثلث متساوی الساقین ۳۰۶ فٹ است\nو هر یک ساق برابر ۵ ضلع سوم است پس رقبه مثلث مذکور\nمعلوم کنید۔\nفصل چهار دهم\nاشکال ذواربعة الاضلاع\n\n(۵۱) هر یک","chars":467,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00181.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/181","canvas":"https://afghanpress.org/iiif/adl0131/canvas/181","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."}}