{"book":"adl0946","page":293,"text":"۲۸۶\nمی کنیم نقطه و ثابت بوده نقطه ح روی محیط دائره حرکت کرده بنقطه\nو نزدیک شود در این حالت خط و ح بدور نقطه و میگردد .\nوقتی که نقطه ح روی نقطه و بیاید بدواً نمیدانیم خط قاطع\nچه طور شده است ولی اگر ملاحظه کنیم که این خط همواره عمود است\nبر خط ه د که از مرکز به وسطش وصل شده است می بینیم که\nهرگاه نقطه ح روی نقطه و بیاید نقطه د نیز روی همان نقطه\nخواهد آمد و خط و ح در نقطه و بر خط وه که شعاع دائره است.\nعمودی باشد بنا\nبراین مماس بر\nدائره است -\nدر این وقت\nمیگویند که هر گاه\nنقطه ح روی نقطه\nو بیاید قاطع و ح\nبه و آخرین حد خود رسیده است پس می گوئیم -\nش ۳۲۹","chars":550,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00293.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/adl0946/293","canvas":"https://afghanpress.org/iiif/adl0946/canvas/293","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."}}