document.write( "Question 664898: if two angles are vertical, then they are congruent .. \n" ); document.write( "
Algebra.Com's Answer #413531 by Alan3354(69443)\"\" \"About 
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if two angles are vertical, then they are congruent ..
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\n" ); document.write( "Define \"vertical angle\"
\n" ); document.write( "Vertical is a direction.
\n" ); document.write( "Angles are measured between 2 lines.
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