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

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

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

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

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