{"book":"adl0131","page":23,"text":"کتاب\n۱۲\nمساح\n۱۲ - قسم‌های ذواربعة اضلاع ذیل اند۔\nشکل متوازی الاضلاع آن شکل ذواربعة الاضلاع است که اضلاع متقابل\nاو متوازی و برابر باشند.\nمستطیل یا قائم الزاویه آن متوازی الاضلاع است که زاویه‌های او قائمہ باش\nمربع آن شکل قائم الزاویه است که\nهمه ضلع‌های او باهم برابر باشند\nمعین آن متوازی الاضلاع است که همه اضلاع او برابرباشند اما زاویه های او\nشبیه بالمعین آن متوازی الاضلاع است\nکه اضلاع مقابل او با هم برابر باشند اما نه همه اضلاع\nبرابر باشند و نه همه زاویه ها قائمه باشند.\nمنحرف آن شکل ذواربعة الاضلاع را گویند که نه همه اضلاع او برابر باشند\nو نه متوازی باشند.\nذوزنقه آنست که دو اضلاع او متوازی باش\n۱۳ کجطح","chars":606,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00023.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/23","canvas":"https://afghanpress.org/iiif/adl0131/canvas/23","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."}}