document.write( "Question 1096074: Prove one angle of triangle equs to other two that is right angle \n" ); document.write( "
Algebra.Com's Answer #710544 by rothauserc(4718)\"\" \"About 
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A = B + C
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\n" ); document.write( "The sum of the angles of a triangle is 180 degrees
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\n" ); document.write( "A + B + C = 180
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\n" ); document.write( "(B+ C) + B + C = 180
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\n" ); document.write( "2B + 2C = 180
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\n" ); document.write( "B + C = 90
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\n" ); document.write( "A = 90 degrees, a right angle
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