File:Icosaedro-costruzione-11.jpg

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Icosahedron geometric construction example

Summary[edit]

Description
العربية: واحدة من أبسط الطرق لبناء القبة الجيوديسية تتلخص في استخدام مركز ش لكرة تحيط بعشروني سطوح ك لاسقاط النقاط الوسطية (مثلا م) لاحرف ك على نفس الكرة . وبذلك كل وجه من من اوجه ك سيشكل أربعة وجوه للقبة الجيوديسية ، حيث يكون المثلث المركزي فقط متساوي الاضلاع والمثلثات الباقية متساوية الساقين 
uno dei metodi più semplici per costruire la cupola geodetica consiste nel utilizzare il centro della sfera che circoscrive un icosaedro per proiettare i punti medi dei spigoli di tale icosaedro sulla stessa sfera. la proiezione di ciascuna faccia dell'icosaedro formerà quattro triangoli, di cui soltanto quello centrale e' equilatero e gli altri tre isosceli.
http://isawi.blogspot.com/2018/05/approssimare-le-superfici-di-rotazioni.html
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Author Hasanisawi

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