{"book":"adl0946","page":299,"text":"۲۹۲\nبنامند - در این حالت ممکن است دو دائره یکدیگر را هم\nقطع نمایند در حالت ثانی س۲۳ دو دائره در دو طرف خط\nمماسند این خط را مماس مشترک خارجی میگویند در\nاین حالت ملاحظه میکنیم که دو دائره مفروضه ممکن نیست .\nنقطه مشترکی غیر از نقطه ا که بر روی نقطه ا بیفتد داشته\nباشند در این وقت آنها با هم مماس خارجی میگردند.\nبالآخره\nدر هر دو شکل\nمیبینیم که\nخط ه هـ یعنی\nقطر مشترک\nدو دائره محور\nتناظر دو دائره س۲۳\nاست بنابر این هر مماس که رسم کنیم مماس دیگری نیز ممکن است\nرسم نمود که نسبت به ه هـ متناظر مماس اول باشد.","chars":500,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00299.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/adl0946/299","canvas":"https://afghanpress.org/iiif/adl0946/canvas/299","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."}}