document.write( "Question 1175092: can you guys please answer this \r
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Algebra.Com's Answer #800631 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Vertical angles are pairs of angles formed by two intersecting lines. Vertical angles are not adjacent angles—they are opposite each other. In this diagram, angles a and c are vertical angles, and angles b and d are vertical angles.\r
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\n" ); document.write( "\n" ); document.write( "so, < \"1\" = < \"3\"
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