document.write( "Question 810909: How do you write an indirect proof for... prove: angle b is the only right angle in triangle abc? \n" ); document.write( "
Algebra.Com's Answer #488544 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
a triangle can only have 180 degrees. There can't be two right angles in a triangle. \n" ); document.write( "
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