1.   Classify the given angle.
   
    A. obtuse B. complementary
    C. acute D. right
    Hint

  2.   Classify the angle.
   
    A. right B. complementary
    C. acute D. obtuse
    Hint

  3.   Classify the pair of angles.
   
    A. The angles are complementary angles because their measures have a sum of 180°. B. The angles are supplementary angles because their measures have a sum of 180°.
    C. The angles are supplementary angles because their measures have a sum of 90°. D. The angles are complementary angles because their measures have a sum of 90°.
    Hint

  4.   What is the measure of the given angle?
   
    A. 120° B. 90°
    C. 175° D. 60°
    Hint

  5.   Classify the given angle.
   
    A. acute B. obtuse
    C. complementary D. right
    Hint



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