document.write( "Question 929561: The second angle of a triangle is 5° smaller than the first. The third angle is triple the size of the first angle. Use the letter F \n" ); document.write( "
Algebra.Com's Answer #564355 by sunny1992(35)\"\" \"About 
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sum of all angle of triangle = 180°
\n" ); document.write( "let,
\n" ); document.write( "1st angle= F°
\n" ); document.write( "2nd angle= F°-5°
\n" ); document.write( "3rd anle= 3F°
\n" ); document.write( "equation
\n" ); document.write( "F°+(F°-5°)+3F° =180°
\n" ); document.write( "5F°-5°=180°
\n" ); document.write( "5f°=185°
\n" ); document.write( "F°=185°/5°
\n" ); document.write( "F°= 37°
\n" ); document.write( "
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