document.write( "Question 161209: in a certain triangle the measure of one angle is double the measure of a second angle but is 10 degrees less than the measure of the third angle. [the sum of the measures of the three interior angles of a triangle is always 180 degrees.] what is the measure of each angle? \n" ); document.write( "

Algebra.Com's Answer #118742 by vleith(2983) $\"\"$ $\"About$

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Let X be the first angle. You are told the second angle is X/2. The third angle is X+10.\r
\n" ); document.write( "\n" ); document.write( " $\"X+%2B+X%2F2+%2B+%28X%2B10%29+=+180\"$
\n" ); document.write( " $\"5X%2F2+=+170\"$
\n" ); document.write( " $\"5X+=+340\"$
\n" ); document.write( " $\"X+=+68\"$
\n" ); document.write( "That means the second angle is $\"68%2F2\"$ = $\"34\"$
\n" ); document.write( "The third angle is $\"68%2B10\"$ = $\"78\"$
\n" ); document.write( "Do those three total to 180? \n" ); document.write( "

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