{"book":"adl0946","page":309,"text":"۳۰۲\n\nمعلوم می شود که مرکز دائره مطلوبه روی یکی از منصفهای چهار\nزاویه ایست که از دو مماس حاصل می شود پس دو خط ل م ل\nو ن م ن را بر هم عمود می کنیم که منصف این زوایا باشند\nپس هر نقطه مانند م که روی یکی از این چهار منصف الزاویه\nبگیریم چون بیک فاصله است از ان دو خط پس مرکز دائره\nمطلوب است و چون نقطه م را بمیل خود انتخاب کردیم پس\nاین مسئله نیز دارای عده لا یتناهی جواب است .\n۳۳۵ - مسئله - بر سه خط مفروض دائره مماس\nکنید .\nما فقط در این جا حالتی را که دران سه خط مفروض یک\nمثلث تشکیل می دهند بیان می کنیم و حل سائر حالات این\nمسئله را بعهده شاگردان واگذار میکنیم .\nدائره رسم کرده روی آن دو نقطه ر و د را نشان می کنیم\nکه در انتهای قطری واقع نشده باشند (س۲۴۲) دو خطی که در\nنقطه بر دائره مماس شوند هم دیگر را در نقطه ل قطع می کنند حال","chars":724,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00309.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/adl0946/309","canvas":"https://afghanpress.org/iiif/adl0946/canvas/309","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."}}