{"book":"adl0131","page":262,"text":"کتاب ۲۵۱ مساحت\n\nب د بالای خطوط عمود وار بانقسم بکشید که رقبه حصه مذکور مبدل\nنشود اگر چه حد آن ب د باشد خواه ب د بشود- اگر ب د خط مستقیم باشد\nپس ب د بر نقطه تنصیف خط مذکور خواهد گذشت و اگر خط\nمذکور مستقیم نباشد پس بذریعه نظر مقام ب د را بطریقه که شرط مذکور\nیافته نشود مقر کنید و همین طور بطرف برد بگرج ی عمود کشید پس رقبه مستطیل ب دع ی\nبرابر رقبۀ شکل مستطیل ب د ی ح خواهد بود پس بطریقه مذکور یک\nسلسلۀ اشکال مستطیل با نقیبم پیدا خواهد شد که رقبه آنها برابر\nخواهد بود بار قبۀ شکل اصل - و رقبه مستطیل های مذکور به بسیار سل\nو اسانی معلوم کرده میشود- پس رقبه شکل اصل معلوم خواهد شد\nمثلاً فرض کنید که خطوط مستقیم متوازیه بفاصلۀ یک انج کشیده\nشده اند و مجموعه طول های کل مستطیل ها ۲۹ انچ است پس\nکل رقبه شکل اصل ۲۹ مربع انچ خواهد بود- حال فرض کنید که در\nنقشۀ زمین بحیث ۳ جریب پیمانه یک انج ساخته شده است","chars":793,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00262.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/262","canvas":"https://afghanpress.org/iiif/adl0131/canvas/262","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."}}