{"book":"adl0131","page":73,"text":"۶۲\nکتاب\n\nمثلث مذکور ۴ فث وقاعده ۱۰ فث است.\n(۳۷) اضلاع یک مثلث ۱۳ و ۱۵ فث اند وقاعده مثلث ۱۴ فث\nپس دریافت کنید که ارتفاع مثلث مذکور چقدر است.\n(۳۸) وتر یک مثلث قائم الزاویه ۵ فث است و ضلع مثلث\n۹ فث است پس دریافت کنید که عمود بالای وتر از زاویه قا[ئمه]\nچقدر خواهد بود.\n(۳۹) از کشیدن عمود بالای وتر از زاویه قائمه یک مثلث[؟]\nوتر بدو حصص ۳ فث و ۱۲ فث مقسم می شوند پس دریافت [کنید]\nکه طول عمود چقدر خواهد بود.\n(۴۰) اگر مجموعۀ دو ضلاع متصل مستطیل ۶۸ فث و قطر آن\n۶۰ فث باشد پس معلوم کنید که ضلع کلان مستطیل چقدر است\nواگر فرق ضلاع متصلۀ مستطیل مذکور ۶ فث و قطر مستطیل مذا[؟]\nفث باشد پس معلوم کنید که ضلع خرد مستطیل چقدر خواهد بود.","chars":621,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00073.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/73","canvas":"https://afghanpress.org/iiif/adl0131/canvas/73","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."}}