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. 120° B. 90°
    C. 108° D. 135°
    Hint

  2.   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 angle measure at each vertex is a factor of 360.
    C. The angle measure at each vertex is less than 180. D. The polygon has an even number of sides and angles.
    Hint

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

  4.   The sum of the angle measures of a regular dodecagon (a 12-sided polygon) is 1800°. What is the measure of each angle of a regular dodecagon?
    A. 144° B. 150°
    C. 100° D. 140°
    Hint

  5.   Which figure will tessellate?
    A. B.
    C. D.
    Hint



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