1.   What is the name of a polygon that has five sides?
    A. nonagon B. heptagon
    C. decagon D. pentagon
    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 polygon has an even number of sides and angles. B. The angle measure at each vertex is a factor of 360.
    C. The sum of the measures of the angles is a multiple of 360. D. The angle measure at each vertex is less than 180.
    Hint

  4.   Choose the best description for the picture.
   
    A. octagon B. regular octagon
    C. hexagon D. regular hexagon
    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. 135°
    C. 1080° D. 150°
    Hint



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