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

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

  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. 120°
    C. 90° D. 108°

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

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