{"book":"adl0946","page":227,"text":"۲۲۰\n\nیکی خواهد بود -\n۲۵۷ - مسئله - مثلثی رسم کنید که يك ضلع و\nو دو زاویه اش معلوم باشد.\nچون دو زاویه مثلث معلوم است پس بسهولت زاویه\nسیم نیز معلوم میشود پس فرض می کنیم که ضلع او دو زاویۀ\nمجاورۀ اش یعنی د و ج معلوم باشند واضح است که باید\nمجموع این دو زاویه از دو\nقائمه کمتر باشد خطی مانند\nد ج مساوی با ضلع مفروض\nرسم و دس (۱۸۶) بعد زاویه\nم ج د را مساوی با زاویه\nج و زاویه ل د ج را مساوی\nبا زاویه ج رسم می نمائیم ولی\nاین دو زاویه را در یک طرف\nضلع د ج رسم می کنیم","chars":458,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00227.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/adl0946/227","canvas":"https://afghanpress.org/iiif/adl0946/canvas/227","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."}}