{"book":"adl0131","page":243,"text":"کتاب\n۲۳۲\nمساحت\n\nو ف یک نقطه اندرون خط مستقیم مذکور معلوم است.\nاز نقطه ف در خط ف الف خط ف دکه ۴۰ کڑی در طول باشد\nپیمایش کنید. و دو علم ها درف میخ کنید بعده یک نوک\nجریب را بر نقطه ف بسته کنید و بر نقطه هشتادم حصه کو\nبگذارید و سی حصه حلقه را در دست گرفته جریب مذکور را\nهموار کرده خوب به پیچانید تا حدیکه دست بالای نقطه ج بکشی\nپس خط ج ف عمود مطلوب خواهد بود. چراکه\n\nد ف = ۴۰ حلقه\nف ج = ۳۰ حلقه\nد ج = ۵۰ حلقه\nپس (د ف) ۲ + (ف ج) ۲ - (د ج) ۲\n\nپس بحکم {د ش ۴۸ م الف} زاویه ج ف د قائمه است.\nخیال باید داشت که از جمله ترکیب های کشیدن عمود یا اخراج\n\nعمود","chars":543,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00243.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/243","canvas":"https://afghanpress.org/iiif/adl0131/canvas/243","source":"https://afghanistandl.nyu.edu/books/adl0131/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0131_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."}}