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

  2.   Classify the angle whose measure is 100°.
    A. acute B. obtuse
    C. straight D. right
    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. 135° B. 108°
    C. 90° D. 120°
    Hint

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

  5.   Find the sum of the measures of the interior angles of the polygon.
   
    A. 540° B. 1080°
    C. 720° D. 360°
    Hint