document.write( "Question 806516: ABC is a triangel. N is a point inside the triangel. Prove that:\r
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document.write( "AN+BN+CN > 1/2 (AB+BC+AC) \n" );
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Algebra.Com's Answer #485894 by psbhowmick(878) You can put this solution on YOUR website! In any triangle, sum of any two sides is always greater than the third.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Consider the triangle ABN: \n" ); document.write( "AN + BN > AB _______________ (1)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Consider the triangle BCN: \n" ); document.write( "BN + CN > BC _______________ (2)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Consider the triangle ACN: \n" ); document.write( "AN + CN > AC _______________ (3)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Adding both sides of (1), (2) and (3) we have\r \n" ); document.write( "\n" ); document.write( "AN + BN + BN + CN + CN + AN > AB + BC + AC \n" ); document.write( "2(AN + BN + CN) > AB + BC + AC \n" ); document.write( "AN + BN + CN > (AB + BC + AC)/2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Hence proved \n" ); document.write( " |