{"book":"adl0946","page":37,"text":"۳۰\n۳۸ - عمود - وقتیکه خطی از مبد أ نیم خطی عمود کند و با آن دو زاویه مجاورهٔ قائمه احداث کند میگویند که آن نیم خط عمود است بر خط .\nمثلاً در س ۳۷ ج ه عمود است بر ا د .\n۳۹ - گونیا - گونیا قطعهٔ چوبی است\nکه مانند س ۳۸ میباشد سه لبهٔ ا ج و ا د\nو د ج خطوط مستقیمه هستند و زاویهٔ\nا د ج قائمه است برای سهولت\nاستعمال در وسط آن سوراخی نموده اند.\n۴۰ - امتحان گونیا - ابتداء مانند \nیکی کنارهای آن را امتحان میکنیم که خط مستقیم باشند بعد معلوم میکنیم که زاویهٔ ا د ج قائمه است یا نیست برای این کار (س ۳۹) ستارهٔ در کنار خط مستقیمی مانند ل د قرار داده گونیائی را که میخواهیم امتحان کنیم بران تکیه می دهیم (مانند تصویری که با خطوط پر در س ۳۹ کشیده شده است) .","chars":644,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00037.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/adl0946/37","canvas":"https://afghanpress.org/iiif/adl0946/canvas/37","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."}}