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

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

  3.   What is the measure of the given angle?
    A. 175° B. 90°
    C. 60° D. 120°

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

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