{"book":"adl0946","page":97,"text":"۹۰\nحال اگر شکل ل را بقدر ۱۸۰ درجه بدور نقطه ه (ع۸۲) بگردانیم .\nبجای ل می آید می دانیم که اگر ا و ج دو نقطه ازان شکل باشند\nو ونیم خط ه ا و ه ج هر کدام بقدر ۱۸۰ درجه بدور نقطه ه\n(ع۸۲) گردیده و بر روی نقاط متناظره خود اَ و جَ منطبق\nمی شوند و این دو نقطه اخیر متعلق به لَ می باشند .\nشکل لَ که بواسطه نقاط متناظره نقاط شکل ل\nتشکیل شده شکل متناظره شکل ل نسبت بمرکز\nه میباشد .\n۱۱۶ - از امتحان سابقه قضیه ذیل را نتیجه می گیریم:\nقضیه - برای بدست آوردن شکل متناظره\nشکل مفروضی نسبت به نقطه مفروضه کافی است\nکه ان را بقدر ۱۸۰ درجه بدور مرکز تناظر دوران\nدهیم .\n۱۱۷ - تساوی دو شکل متناظره - قضیه فوق الذکر\nاهمیت زیاد دارد زیرا که مطلب ذیل را بما میفهماند.","chars":640,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00097.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/adl0946/97","canvas":"https://afghanpress.org/iiif/adl0946/canvas/97","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."}}