1.   Which of the following statements does not necessarily describe a polygon?
    A. lines do not intersect B. symmetrical
    C. consists of 3 or more line segments D. closed

  2.   Choose the best description for the figure.
    A. semicircle B. polygon
    C. not a polygon D. regular polygon

  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. 108° D. 90°

  4.   By drawing triangles, you can find that all of the measures of the angles in an octagon add up to 1080°. Find the measure of one angle in a regular octagon.
    A. 135° B. 150°
    C. 1072° D. 1080°

  5.   The sum of the angle measures of a regular hendecagon (an 11-sided polygon) is 1620°. What is the measure of each of the angles of the hendecagon? Round your answer to the nearest whole degree.
    A. 144° B. 147°
    C. 90° D. 150°

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