{"book":"adl0946","page":312,"text":"۳۰۵\n\nکه بر اد د ح مماس باشد روی یکی از دو منصف زاویه د\nواقع است و یکی از این منصف الزوایا منصف زاویه داخلی\nمثلث است و دیگری را منصف خارجی میگویند.\nو همچنین دائره که بر ا ح و ح د مماس باشد روی یکی از دو\nمنصف زاویه ح واقع است پس مرکز دائره مطلوبه روی\nمنصف زاویه د و همچنین روی منصف زاویه ج است و\nما حالات ممکنه را بتفصیل بیان می کنیم.\n۳۳۷ - منصف های داخلی - دو منصف داخلی دو\nزاویه د و ج در نقطه ه یک دیگر را قطع می کنند که از سه\nضلع مثلث بیک فاصله است پس بر روی منصف زاویه ا نیز\nواقع می باشد و چون در داخل مثلث است پس بر روی منصف\nداخلی زاویه ا واقع است پس می گوئیم.\nقضیه - سه منصف زوایای داخلی مثلث یکدیگر\nرا در يك نقطه قطع می کنند که مرکز دائره محاطی\nمثلث است.\nچنانکه مسطح","chars":671,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00312.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/adl0946/312","canvas":"https://afghanpress.org/iiif/adl0946/canvas/312","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."}}