document.write( "Question 38653: A pair of vertical angles have degree measure of x2 (x squared) and x + 20. One of the angles can have a measure of ..\r
\n" ); document.write( "\n" ); document.write( "a) 20
\n" ); document.write( "b) 36
\n" ); document.write( "c) 5
\n" ); document.write( "d) 25 THE ANSWER IS D)25, but why and how to you get this-please explain in detail\r
\n" ); document.write( "\n" ); document.write( "SORRY FOR INCONVENIENCE< BUT YOUR HELP IS MOST APPRECIATED
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Algebra.Com's Answer #24564 by fractalier(6550)\"\" \"About 
You can put this solution on YOUR website!
Any time straight lines cross, they make congruent vertical angles.
\n" ); document.write( "Thus x^2 = x + 20
\n" ); document.write( "x^2 - x - 20 = 0
\n" ); document.write( "(x - 5)(x + 4) = 0
\n" ); document.write( "x = 5 (x cannot be negative)
\n" ); document.write( "and if x = 5, the two angles are
\n" ); document.write( "x^2 = 25 and
\n" ); document.write( "x + 20 = 25
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