{"book":"adl0946","page":315,"text":"٣٠٨\nپس روی منصف زاویهٔ ا نیز واقع است ازین نمره و نمرهٔ سابق مجموعاً چنین نتیجه گیریم.\nقضیه - دو منصف خارجی با يك منصف داخلی مثلث یکدیگر را در يك نقطه قطع میکنند که مرکز يك دائره محاطی است.\n.ع٣- ترسیم عملی - از آنچه مذکور شد آسان ترین وسیله برای ترسیم دوائر محاطی مثلث آن است که سه منصف خارجی آن را رسم کنیم تا مثلث هَ هَ هَ تشکیل شود و بعد از سه رأس این مثلث به رؤس مثلث مفروض وصل می نمائیم که منصف زوایای داخلی مثلث میگردند و یک دیگر را در نقطهٔ ه قطع می نمایند.\nچون مرکز دوائر معلوم شد برای یافتن شعاع دائره از مرکز عمودی بر یکی از اضلاع فرود می آوریم عمود مرسوم شعاع دائرهٔ محاطی مطلوب است سره٢٤ ترسیم عملی فوق را نشان می دهد.","chars":630,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00315.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/adl0946/315","canvas":"https://afghanpress.org/iiif/adl0946/canvas/315","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."}}