{"book":"adl0946","page":294,"text":"۲۸۷\nخط مماس در یک نقطه بر دائره آخرین حد قاطعی\nاست که این نقطه را به نقطه دیگری از دائره وصل\nنماید وقتیکه نقطه اخیر بر روی نقطه اول بیفتد .\n۱- مسائل راجع به مماس های دائره\n۳۲۱ - تبصره - خاصیت اصلی خط مماس بر دائره آن\nاست که با دائره فقط در یک نقطه اشتراک داشته باشد و آن\nنقطه را نقطه مماس دائره با خط می نامند .\n۳۲۲ - مسئله - از نقطه مفروضی خطی بر دائره\nمماس کنید .\nمی دانیم که غیر از نقطه مماس تمام نقاط خط مماس در خارج\nدائره واقع می گردد پس اگر نقطه مفروضه در درون دائره باشد\nمسئله هرگز ممکن نیست .\nاز طرف دیگر هرگاه نقطه مفروضه روی دائره باشد مسئله\nبسیار آسان است زیرا که مماس مطلوب عمود است بر انتهای","chars":604,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00294.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/adl0946/294","canvas":"https://afghanpress.org/iiif/adl0946/canvas/294","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."}}