{"book":"adl0946","page":238,"text":"۲۳۱\n\nکه طول این نخ بزرگتر از طول ا ج می باشد.\nپس\nهر قوس منحنی از وتری که دو انتهایش س ابهم\nوصل می کند بزرگتر است.\n۲ - ترسیم مثلثات قائم الزاویه\n۲۶۹ - ترسیماتی را که سابقاً در باب مثلث ذکر کردیم در\nصورتی که یک زاویه آن هم قائمه باشد صدق می کند فقط در\nمثلث قائم الزاویه هرگاه یکی از دو زاویه حاده معلوم باشد\nدو زاویه دیگر مثلث بدست می آید حال بعضی مطالبی که ترسیم\nمثلث قائم الزاویه را ساده و آسان میکند بیان می کنیم.\n۲۷۰ - مسئله - از مثلث قائم الزاوية يك ضلع\nويك زاويه حاده معلوم است میخواهیم آن را\nرسم كنيم .\nسه زاویه مثلث معلوم است پس این مسئله مانند مسئله","chars":556,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00238.jpg","first_page":1,"last_page":327,"title":"Handasah-ʼi musaṭṭaḥah barā-yi ṣinf-i haftum-i makātib-i rushdīyah, bi-qarār-i prūghram-i Vizārat-i Jalīlah-ʼi Muʻārif-i Afghānistān هندسۀ مسطحه :هندسۀ مسطحه","permalink":"https://afghanpress.org/book/adl0946/238","canvas":"https://afghanpress.org/iiif/adl0946/canvas/238","source":"https://afghanistandl.nyu.edu/books/adl0946/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0946_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."}}