{"book":"adl0946","page":230,"text":"۲۳۳\nممکن است بقدر ضلع ۳ از ضلع ا ل و بقدر ضلع ۲ از ضلع ا م\nجدا نمائیم آن وقت مثلث ا دَ جَ بدست می آید ولی نقاط\nج و جَ و د و دَ نسبت به منصف الزاویه ا ع متناظره اند و دو\nمثلث متساوی الساقین ا ج جَ و ا د دَ) پس دو مثلث\nا د ج و ا دَ جَ نیز باهم متناظره و متساویند پس معلوم شد که\nاین مسئله بیش از یک جواب قبول نمیکند -\n۲۶۰ - حالت دوّم تساوی دو مثلث - از حلّ مسئله\nفوق معلوم شد که هرگاه دو مثلث داشته باشیم که در دو ضلع\nو زاویه بینهما باهم مساوی باشند واگر آن دو مثلث را بر\nروی هم قرار دهیم بطور ختم بر روی هم خواهند افتاد بنابران\nاین مساوی اند - پس میگوئیم -\nقضیّه - هرگاه دو ضلع و زاویه بینهما اثر مثلثی\nمساوی باشد با دو ضلع و زاویه بینهما از مثلث\nدیگر ان دو مثلث باهم مساویند -\n۲۶۱ - سه ضلع مثلثی معلوم است میخواهیم","chars":713,"image":"https://storage.googleapis.com/adl-page-images/adl0946/00230.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/adl0946/230","canvas":"https://afghanpress.org/iiif/adl0946/canvas/230","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."}}