{"book":"adl0946","page":26,"text":"۱۹\n\nاز ۴٫۵ میلیمتر بیشتر و از ۴٫۶ میلیمتر کمتر باشد پس میگوئیم که\nاندازهٔ قطعه خط مابین ۴٫۵ و ۴٫۶ سانتی متر است و این\nدو عدد را اندازه های تقریبی آن میگویند.\n۲۳- سطح - از ملاحظه نقاط اجسام مادّی که با هوا مجاورند\nبرای ما خیالی از سطح حاصل می شود مثلاً یک صفحه کاغذ و\nپوست نازک یک میوه نمایش سطح را می دهند.\n۲۴- سطح مستوی - ساده ترین سطوح سطح مستوی است\nمثلاً سطح یک میز و یک دیوار و آب ساکن در یک ظرف کوچک\nنمایش آن را می دهند.\n۲۵- خواص میزۀ سطح مستوی - وقتیکه نجاری بخواهد\nسطح میزی را صاف نماید برای\nامتحان آن ستّاره را برداشته\nاز هر طرف روی آن قرار میدهد\nو بدقت می بیند که کناره ستّاره کاملاً\nروی سطح میز واقع شده است یا نه (ش ۲۵) اگر سطح میز صاف","chars":646,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00026.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/adl0946/26","canvas":"https://afghanpress.org/iiif/adl0946/canvas/26","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."}}