document.write( "Question 431668: Two angles of a triangle are equal. The third angle of this triangle is twice as large as the sum of the first two angles. How long is each angle? \n" ); document.write( "
Algebra.Com's Answer #299514 by jorel1380(3719)\"\" \"About 
You can put this solution on YOUR website!
Let's call the angles X,Y, and Z.\r
\n" ); document.write( "\n" ); document.write( "angle X=angle Y
\n" ); document.write( "angle Z=2(angle X+angle Y)
\n" ); document.write( "angleX+angleX+2(2angleX)=180
\n" ); document.write( "6 angle X= 180
\n" ); document.write( "X=30 degrees
\n" ); document.write( "Y=30 degrees
\n" ); document.write( "Z=120 degrees
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