{"book":"adl0946","page":28,"text":"۲۱\nیا بطور اختصار :\nيك سطح ممکن است بر روی خود بلغزد.\n۲۷ - انعکاس - همین تجربه را ممکن ست تکرار کنیم در\nصورتیکه مقوا را از طرف نوشته بر روی میز قرار دهیم در این\nصورت می گویند که سطح منعکس شده است:\nپس میتوان دو سطح را بدو طریق بر روی هم منطبق نمود:-\nاوّل - بدون انعکاس .\nدوم - با انعکاس .\n۲۸ - اشکال هندسی - اشکال هندسی از اجتماع نقاط\nو خطوط و سطوح تشکیل می شود. اگر تمام نقاط و\nخطوط در یک سطح مستوی رسم شده باشند\nآن ها را اشکال مسطحه می نامند و تحصیل آن ها را هندسه\nمسطحه می گویند و تحصیل اشکال غیر مسطحه را هندسه\nفضائیه می نامند.","chars":530,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00028.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/adl0946/28","canvas":"https://afghanpress.org/iiif/adl0946/canvas/28","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."}}