document.write( "Question 1166711: in triangle DEF, m angle E is three times m angle D, and m angle F is 9 less than m angle E. what is the measure of each angle?
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Algebra.Com's Answer #791241 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "The sum of the angles is 180 degrees\r\n" );
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document.write( "    D +  E +  F     = 180\r\n" );
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document.write( "    D + 3D + (3D-9) = 180\r\n" );
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document.write( "    7D              = 189\r\n" );
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document.write( "     D              = 189/7 = 27.\r\n" );
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document.write( "From this point, complete the solution on your own.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Standard trivial routine problem.\r
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