document.write( "Question 9026: I don't understand angles at all. how do you know when it's a linear or adjacent pair? \n" ); document.write( "
Algebra.Com's Answer #7697 by vasu2qute(17)\"\" \"About 
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A
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\n" ); document.write( " C ______________\______________ D
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\n" ); document.write( "\n" ); document.write( " In the above illustration angle AOC and angle AOD form a linear pair.
\n" ); document.write( "The pair is said to be linear because the sum of the angles is 180 degrees.
\n" ); document.write( "You can tell that their sum is 180degrees as the points C , O and D are collinear ie they lie in the same straight line. So angle COD = 180 degrees.
\n" ); document.write( "Therefore angle AOC + angle AOD = 180 degrees. You can say that angle AOC and angle AOD are adjacent angles . all linear pairs can be called adjacent angles\r
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\n" ); document.write( "\n" ); document.write( "but all adjacent angles need not be linear pairs. It is not necessary that the sum of two adjacent angles to be equal to 180 degrees.\r
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