1.   In the figure, °. Find
   
    A. 120° B. 45°
    C. 90° D. 30°
    Hint

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

  3.   The sum of the measures of the angles of a regular octagon is 1,080. Find the measure of one of its angles.
    A. 90° B. 120°
    C. 135° D. 108°
    Hint

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

  5.   What is the measure of the angle?
   
    A. 150° B. 60°
    C. 90° D. 120°
    Hint