{"book":"adl0946","page":93,"text":"۸۶\n\nدوم - اشکال معکوساً مساوی که بعد از تغییر\nمحل بواسطهٔ برگرداندن یکی از آنها برهم منطبق\nمی‌گردند.\n۱۱۰ - مثال دیگر - اگر یک حرفی سربی مطبعه را مثلاً\nحرف ج را برداشته آن را چندین بار در یک طرف یک\nورق کاغذ شفاف بزنیم (س۸۸) اشکالی بدست می‌آید\nکه باهم بطور مستقیم مساوی اند.\nحال اگر همان حرف را در\nپشت کاغذ چندین بار بزنیم\n(س۸۹) اشکالی بدست می‌آید\nکه باهم بطور مستقیم مساویند\nولی با اشکال اولیه بطور معکوس مساوی می‌باشند.\n۱۱۱ - تبصره - اگر در ۱۰۹ بجای آنکه مثلثی با مقوا درست\nکنیم دائره درست کرده و بدور آن مداد را کشیده بودیم خواه\nآنرا برمی‌گردانیم خواه برنمی‌گرداندیم تمام اشکال مرتسمه\n\n[illustration inline]\nج\nج\nج\nج\nس ۸۸","chars":621,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00093.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/adl0946/93","canvas":"https://afghanpress.org/iiif/adl0946/canvas/93","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."}}