Is it possible for two angles to be vertical angles and comp
     Is it possible for two angles to be vertical angles and complementary angles? What about vertical and supplementary? Explain.  In each figure, find x.   
  
  Solution
Complementary angles are two angles with a sum of 90º.
 
 Supplementary angles are two angles with a sum of 180º.
 
 Vertical angles are two angles whose sides form two pairs of opposite rays. We can think of these as opposite angles formed by an X.

