{"book":"adl0131","page":236,"text":"کتاب\n۲۲۵\nمساحت\n\nفصل سیزدهم در بیان عمود -\n(۱۷۷) در چند قواعد معلوم کردن رقبه های اشکال مستقیمه الاضلاع\nضرورت دریافت کردن عمودی فاصله از بعض نقطه معلوم\nتا خط معلوم می افتد - وقتیکه مقام وقوع عمود ها معلوم\nگردد پس بموجب دفعه (۱۷۳) طول آنها دریافت کرده میشود -\nترکیب های معلوم کردن مقام وقوع عمود ها را در ذیل\nبیان مینمائیم -\n(۱۷۸) از یک نقطه خاص بالای یک خط مستقیم معلوم که\nنقطه خاص مذکور از خط مستقیم مذکور بیرون است اگر عمود انداخته\nشود پس مقام عمود مذکور را دریافت کنید -\nفرض کنید که الف ب خط مستقیم\nو ج نقطه معلوم بیرون خط مستقیم\nمذکور است - یک زنجیر یا ریسمان گرفته بدو حصه برابر تقسیم کنید","chars":593,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00236.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/236","canvas":"https://afghanpress.org/iiif/adl0131/canvas/236","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."}}