mach sao - tam giac

   !!"# !$! %&'(&') *&' %+,-./0 12%345  67898:;<=>?@:7>AB7C>DE?FG;HI>AJKLMGJ?N?OP HI>AJ?B7Q>HRPJ?SHI#∆TUVW>AJXBVLFHYFZ [\H]MGJ?N?OPHI>A#∆TUVW>AJXBVLFHYF ^_& ,& &*`#∆ WJ;PCB@:P?aJ [LB@:P?aJ>:7?aJTP>?JbN?Y>c>A- $d9HefJT\H]MGJ?N?OPHI>A;gHI>AHRP>hP#∆ d?i>;jJ?HefJ>AB7C>DE?FG;HI>AJKLMGJ?N?OPHI>A;gHI>AHRP >hP#∆ kdlmJHn>?HefJJmJ>AB7C>>?i>8:@Po>p?mpN?qJp?WJJmJ;<er>A ?fp?e?s>A;?er>AAtp .    !!"# !$! %&'(&') *&' %+ ,- ./0 12%345  67898:;<=>?@:7>AB7C>DE?FG;HI>AJKLMGJ?N?OP HI>AJ?B7Q>HRPJ?SHI#∆TUVW>AJXBVLFHYFZ [H]MGJ?N?OPHI>A#∆TUVW>AJXBVLFHYF ^_& ,& &*`#∆ WJ;PCB@:P?aJ [LB@:P?aJ>:7?aJTP>?JbN?Y>c>A- $d9HefJTH]MGJ?N?OPHI>A;gHI>AHRP>hP#∆ . !$! %&'(&') *&' %+ ,- ./0 12%345  67898:;<=>?@:7>AB7C>DE?FG;HI>AJKLMGJ?N?OP HI>AJ?B7Q>HRPJ?SHI#∆TUVW>AJXBVLFHYFZ [H]MGJ?N?OPHI>A#∆TUVW>AJXBVLFHYF ^_& ,& &*`#∆ WJ;PCB@:P?aJ [LB@:P?aJ>:7?aJTP>?JbN?Y>c>A- $d9HefJTH]MGJ?N?OPHI>A;gHI>AHRP>hP#∆ d?i>;jJ?HefJ>AB7C>DE?FG;HI>AJKLMGJ?N?OPHI>A;gHI>AHRP >hP#∆ kdlmJHn>?HefJJmJ>AB7C>>?i>8:@Po>p?mpN?qJp?WJJmJ;<er>A ?fp?e?s>A;?er>AAtp