{"book":"adl0946","page":57,"text":"۵۰\n\nابتداء کنار گونیا خطی رسم کرده بعد آن را در طرف دیگر\nاد نیز امتداد می دهیم\nآن وقت سره بدست\nما می آید که در ان مسئله حل\nشده است.\nفرض می کنیم که کاغذ\nرا در امتداد اد تا کرده باشیم\nس ۵\nچون چهار زاویه حادثه که دارای رأس مشترک ج هستند قائمه\nاند قسمت ج * بر روی\nج * واقع شده نقطه *\nبر روی * واقع میگردد اگر\nکاغذ ما نازک و شفاف باشد\nاز پشت کاغذ معلوم میشود\nولی ما خود بصحت آن یقین\nداریم.\nس و","chars":388,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00057.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/adl0946/57","canvas":"https://afghanpress.org/iiif/adl0946/canvas/57","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."}}