{"book":"adl0946","page":62,"text":"۵۵\n۷۲- شعاع - شعاع دایره قطعه خطی است که مرکز را\nبیکی از نقاط محیط وصل نماید مثلاً در سر ۶۲ ہ ا یک شعاع دایره\nاست از روی تعریف دایره می گوئیم :\nتمام اشعه يك دایره با هم مساوی هستند .\n۷۳ - قطر - قطر دایره قطعه خطی است که از مرکز عبور\nکرده و از طرفین به محیط دایره\nمحدود شده است مثلاً در\nسر ۶۳ ا ج یک قطر است\nواضح است که :\nاولاً هر قطر دو برابر\nشعاع است .\nثانیاً تمام قطر های يك دایره با هم مساویند.\n۷۴ - تعیین یک دایره - برای تعیین یک دائره\nلازم است که مرکز و شعاع آن در دست باشد و ممکن است\nمرکز و یک نقطه از آن نیز در دست باشد زیرا که فاصله بین","chars":544,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00062.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/adl0946/62","canvas":"https://afghanpress.org/iiif/adl0946/canvas/62","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."}}