document.write( "Question 848155: Quadrilateral w/3 angles 120, 110, & 70 what is the 4th angle\r
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Algebra.Com's Answer #510904 by ewatrrr(24785)\"\" \"About 
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\n" ); document.write( "Hi,
\n" ); document.write( "Quadrilateral: SUM of its angles is 360°
\n" ); document.write( "360° - 120° - 110° - 70° = 360° - 300° = 60° \n" ); document.write( "
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