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

  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. 108° B. 90°
    C. 120° D. 135°
    Hint

  3.   Which of the following angle measures represents the angles of a regular polygon that can be used to make a tessellation?
    A. 120° B. 108°
    C. 140° D. 150°
    Hint

  4.   The sum of the angle measures of a regular dodecagon (a 12-sided polygon) is 1800°. What is the measure of each angle of a regular dodecagon?
    A. 100° B. 144°
    C. 140° D. 150°
    Hint

  5.   Which of the following angle measures represents the angles of a regular polygon that can be used to make a tessellation?
    A. 108° B. 144°
    C. 60° D. 140°
    Hint



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