document.write( "Question 1085548: three angels of a triangle are in arithmetic progression with a common difference of 20 degrees.what is the smallest angle in the triangle? \n" ); document.write( "

Algebra.Com's Answer #699620 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "x + (x + 20) + (x + 40) = 180 degrees\r\n" );
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document.write( "is your equation.\r\n" );
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document.write( "3x + 60 = 180  --->  3x = 180 - 60 = 120  --->  x = 40.\r\n" );
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document.write( "Answer.  the smallest angle in the triangle is of 40 degrees.\r\n" );
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