1.   What is the name of a polygon that has five sides?
    A. decagon B. nonagon
    C. heptagon D. pentagon

  2.   The sum of the measures of the angles of a regular octagon is 1080. What is the measure of each angle?
    A. 135 B. 108°
    C. 144° D. 120

  3.   In the tessellation shown below, name the polygons and determine how many of each type are at each vertex.
    A. 2 octagons and 1 square B. 1 octagon and 4 squares
    C. 4 octagons and 1 square D. 1 octagon and 2 squares

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

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

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