{"book":"adl0131","page":302,"text":"کتاب ۲۹۱ مساحت\n\nآلۀ مذکوره نزد مساح که تجربه کار باشد موجود باشد پس در پیمایش\nاحتمال غلطی پیدا نمیشود. علاوه ازین بجهت محافظت غلطی احاطه\nکردن خط سمتی بطوریکه در پیمایش پریز متک کمپاس لازمتی بود\nضرورت ندارد چرا که مغالطۀ زاویه ها را از مغالطۀ مساحت جدا کرده\nمیتوانیم چرا که مجموعۀ اندرونی زاویه های هر یک مستقیمۃ الاضلاع\nبرابر میباشد بزاویه های قائمه که تعداد زاویه های مذکور از تعداد\nاضلاع چهار کم باشند مثلاً مجموعۀ اندرونی زاویه مخمس =\n۵۴۰۴ = ۹۰۰ × ۶ = ۹۰۰ × ۴ - ۹۰۰ × ۵ × ۲\nپس زاویه های ی الف ب و الف ب ج و ب ج د و ج د ی و\nی الف که پیمایش کرده شده اند مجموعه زاویه های مذکور برابر\n۵۴۰۴ باید دید.\n(۲۲۰) چونکه در پیمایش همراه (دور تھیوڈولائٹ) ضرورت\nخطوط بندش نمیباشد پس بجهت پیمایش کردن جنگلها و خندقها","chars":703,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00302.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/302","canvas":"https://afghanpress.org/iiif/adl0131/canvas/302","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."}}