document.write( "Question 317835: If one interior angle of a parallelogram measures 120 degrees, what are the measures of the other three interior angles? \n" ); document.write( "
Algebra.Com's Answer #227607 by unlockmath(1688)\"\" \"About 
You can put this solution on YOUR website!
Hello,
\n" ); document.write( "First we need to know how many degrees are in a parallelogram. We can use the formula 180(n-2) (n is the number of sides)
\n" ); document.write( "This works out to 180(4-2)=360 degrees.
\n" ); document.write( "Now we can set up the following equation as:
\n" ); document.write( "2(120)+2x=360 Subtract 240 from both sides to get:
\n" ); document.write( "2x=120 Divide by 2 to get:
\n" ); document.write( "x=60 degrees
\n" ); document.write( "Therefore we know 2 angles are each 120 degrees and the other 2 are 60 degrees.
\n" ); document.write( "Make sense?
\n" ); document.write( "RJ
\n" ); document.write( "www.math-unlock.com
\n" ); document.write( "
\n" );