1.   Choose the best description for the figure.
    A. polygon B. semicircle
    C. regular polygon D. not a polygon

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

  3.   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. 150° B. 1080°
    C. 135° D. 1072°

  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. 100° B. 140°
    C. 150° D. 144°

  5.   In the tessellation below, name the polygons and determine how many of each type are at each vertex.
    A. six triangles
    B. none of the other choices; different vertices have different polygons forming them
    C. one hexagon and four triangles
    D. two triangles and two hexagons

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