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Geometry 9.1 Practice
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If the figure is a regular polygon, find the value of x.
x = 14
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What is the measure of EACH exterior angle of a regular 20-gon?
18º
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What is the measure of EACH interior angle of a regular octagon?
135º
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If the interior angle of a regular polygon measures 108º, how many sides does the polygon have?
5 sides
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Solve for x.
x = 17
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Five angles of a hexagon measure 119º, 129º, 104º, 139º, and 95º. What is the measure of the sixth angle?
134º
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Find the value of x.
x = 12
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Find the value of x.
94º
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Find the measure of angle B.
79º
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What is the sum of the measures of the interior angles of a pentagon?
540º
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What is the sum of the measures of the exterior angles of a nonagon?
360º
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The sum of the interior angles of a polygon is 3960º. How many sides does the polygon have?
24 sides
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If the exterior angle of a regular polygon measures 9º, how many sides does the polygon have?
40 sides
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What is the measure of EACH interior angle of a regular 20-gon?
162º
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The sum of the interior angles of a polygon is 1620º. How many sides does the polygon have?
11 sides
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Find the value of x.
116º
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What is the sum of the measures of the interior angles of a 27-gon?
4500º
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