document.write( "Question 196546This question is from textbook algebra and trigonometry
\n" ); document.write( ": How to solve question: one angle of a quadrilateral has measure a degrees. Find the average of the measures of the other three angles. \n" ); document.write( "
Algebra.Com's Answer #147354 by edjones(8007)\"\" \"About 
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360-a is the sum of the other 3 angles.
\n" ); document.write( "(360-a)/3 is the average of the measures of the other 3 angles.
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