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

  2.   Which of the following is a regular polygon?
    A. B.
    C. D.
    Hint

  3.   Which characteristic of a regular polygon is used to determine if it tessellates?
    A. The sum of the measures of the angles is a multiple of 360. B. The polygon has an even number of sides and angles.
    C. The angle measure at each vertex is a factor of 360. D. The angle measure at each vertex is less than 180.
    Hint

  4.   Which puzzle piece will tessellate?
    A. B.
    C. D.
    Hint

  5.   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. 1072° B. 1080°
    C. 135° D. 150°
    Hint



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