document.write( "Question 765034: if four angles of a pentagon have measure 100 degree,104 degree,109 degree and 97 degree
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Algebra.Com's Answer #465934 by ramkikk66(644) $\"\"$ $\"About$

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document.write( "The formula for the sum of all the angles of a polygon with n sides is\r\n" );
document.write( "(n - 2)*180. e.g. for a triangle, n = 3, and sum of angles = (3 - 2)*180 = 180.\r\n" );
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document.write( "For a pentagon, n = 5, so sum of the 5 angles = (5 - 2)*180 = 540 degrees.\r\n" );
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document.write( "You already know the 4 angles. Add them up and subtract the total from 540 to get \r\n" );
document.write( "the measure of the 5th angle, which is your answer :)\r\n" );
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