{"book":"adl0946","page":226,"text":"۲۱۹\n\nیک مثلث جواب آنست -\nچون زاویه د را بمیل خود انتخاب کردیم پس این\nمسئله نیز دارای عده لایتناهی جواب می باشد -\n۲۵۵ - مسئله - مثلثی رسم کنید که سه زاویه اش\nمعلوم است -\nاین مسئله مانند مسئله ۲۵۲ است فقط باید مجموع سه\nزاویه مساوی دو قائمه باشد واگر دو زاویه هم معلوم باشد\nزاویه سیم را حساب می کنیم این مسئله هم دارای عده\nلایتناهی جواب است -\n۲۵۶ - خلاصه - هر گاه يك جزء یا دو جزء یا سه\nزاویه مثلثی معلوم باشد عده لایتناهی مثلثات\nمیتوان یافت که شامل آنها باشند -\n۲۵۷ - حال شروع می کنیم بحل مسائلی که در آنها سه\nجزء مثلث معلوم باشد بشرط آنکه اقلاً یکی از آن سه جزء ضلع\nباشد و معلوم می کنیم که بغیر از یک مسئله همیشه جواب مسئله","chars":622,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00226.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/adl0946/226","canvas":"https://afghanpress.org/iiif/adl0946/canvas/226","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."}}