{"book":"adl0946","page":301,"text":"۲۹۴\n\nه ح و ه د را همان مماس می نمائیم حال از مرکز ه به نقطهٔ ح و د وصل\nنموده امتداد می دهیم تا دایره ه را در دو نقطهٔ ا و ل قطع کند و\nهمچنین دو شعاع ه اَ و ه لَ عمود بر ه ج و ه د دو نقطه\nاَ و لَ را بما دهد اَ را به ا و لَ را به ل وصل میکنیم این دو\nخط دو مماس مطلوب اند زیرا که بر انتهای دو شعاع عمودند.\n\n۳۲۸ - بحث - ترسیم سابق هرگز ممکن نیست مگر آنکه\nنقطه ه خارج دائرهٔ باشد که بمرکز ه و شعاعی برابر با تفاضل\nدو شعاع رسم شده باشد پس باید چنین داشته باشیم (دو شعاع\nا ع و ع فرض میکنیم)\nع - ع < هَ ه\nبنابراین ممکن\nاست که دو دائره داخلی\nباشند (ش ۲۱۳)\nهرگاه هَ ه مساوی\nبا ع - ع باشد دو دائره\n\n[diagram with text: ش ۲۳۳]\n[letters in diagram: ل، ا]","chars":641,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00301.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/adl0946/301","canvas":"https://afghanpress.org/iiif/adl0946/canvas/301","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."}}