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

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

  3.   The sum of the measures of the angles of a regular octagon is 1,080. Find the measure of one of its angles.
    A. 135° B. 108°
    C. 90° D. 120°
    Hint

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

  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. 147° B. 144°
    C. 90° D. 150°
    Hint



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