document.write( "Question 2209: if a simple figure has n sides,to find the sum (s)of the angles of that figure you use the formula:
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document.write( "s=180(n-2) \n" );
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Algebra.Com's Answer #924 by longjonsilver(2297) You can put this solution on YOUR website! to find the sum of the interior angles, yes that formula is correct, but can you remember it? Do you understand it?\r \n" ); document.write( "\n" ); document.write( "A much better method is NOT to remember that formula, but to understand what i tell you here.....\r \n" ); document.write( "\n" ); document.write( "a triangle has 3 sides...angles=180 \n" ); document.write( "any 4-sided figure can be split into 2 triangles...so 2 triangles = 2*180 \n" ); document.write( "any 5-sided figure can be split into 3 triangles...so 3 triangles = 3*180\r \n" ); document.write( "\n" ); document.write( "blah blah blah...\r \n" ); document.write( "\n" ); document.write( "any 24-sided figure can be split into 22 triangles...so 22 triangles = 22*180 etc. See? Now this explains the formula, doesn't it? \r \n" ); document.write( "\n" ); document.write( "eg what is the sun of the interior angles of a 16 sided figure?\r \n" ); document.write( "\n" ); document.write( "Answer... well, a 16-sided figure can be split into 14 triangles, so 14*180 = whatever :-). See, no formula required, ever!\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "jon \n" ); document.write( " |