{"book":"adl0946","page":81,"text":"۷۴\n\nهای آن از دو طرف است یعنی از ۱۸۰ درجه به صفر و از صفر به\n۱۸۰ درجه.\nاگر نقاله از ماده شفافی مانند شاخ و سلولوئید ساخته شده\nباشد مانند سر ۷۸ است ولی اگر از چوب یا فلز باشد در وسط\nآن سوراخ است و خط ا ج رسم ۷۸ قطر نیم دائره است.\nمرکز آن بواسطه بریدگی کوچکی نمایان است.\nهر گونه نقاله که در دست باشد همیشه ممکن است مرکز آنها\nبر روی راس هر زاویه مفروضی منطبق نمود.\n۹۵- اندازه گرفتن یک زاویه بتوسط نقاله -\nاز آنچه گفته شد اندازه گرفتن هر زاویه توسط نقاله کار نقاله بسیار آسانی است ابتدا\nاضلاع آنرا در صورت لزوم امتداد می دهیم بقسمی که از شعاع","chars":538,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00081.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/adl0946/81","canvas":"https://afghanpress.org/iiif/adl0946/canvas/81","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."}}