document.write( "Question 661903: What is the reason of angle 4 plus angle 2 equals 90? \n" ); document.write( "
Algebra.Com's Answer #411830 by Alan3354(69443)\"\" \"About 
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What is the reason of angle 4 plus angle 2 equals 90?
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\n" ); document.write( "Maybe they don't.
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