1.   Classify the angle below.
   
    A. straight B. right
    C. acute D. obtuse
    Hint

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

  3.   Classify the angle below.
   
    A. acute B. straight
    C. right D. obtuse
    Hint

  4.   Classify the angle below.
   
    A. right B. acute
    C. straight D. obtuse
    Hint

  5.   Which angle has a measure of 90°?
    A. B.
    C. D.
    Hint



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