1.   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°

  2.   Which of the following angle measures represent the angles of a regular polygon that can be used to make a tessellation?
    A. 135° B. 144°
    C. 150° D. 90°

  3.   In a tessellations with squares and regular triangles, two squares touch each vertex. How many triangles touch each vertex?
    A. 3 B. 1
    C. 2 D. 4

  4.   What is the name of a polygon that has seven sides?
    A. nonagon B. heptagon
    C. hexagon D. octagon

  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. 90° B. 144°
    C. 150° D. 147°

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