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

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

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

  4.   Find the 30° angle.
    A. B.
    C. D.
    Hint

  5.   Find the sum of the measures of the interior angles of this polygon.
   
    A. 540° B. 360°
    C. 900° D. 180°
    Hint