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

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

  3.   Classify the angle whose measure is 100°.
    A. obtuse B. acute
    C. right D. straight
    Hint

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

  5.   Which angle has a measure of 10°?
    A. B.
    C. D.
    Hint



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