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Define polygons and identify those with 10 or fewer sides

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
closed plane geometric figure composed of at least 3 line segments that do not cross. None of the sides are curved   polygon  
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a polygon with three angles and three sides   triangle  
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a polygon with four sides   quadrilateral  
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a quadrilateral with four right angles   rectangle  
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a rectangle with four sides of equal length   square  
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a quadrilateral with exactly one pair of parallel sides   trapezoid  
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a quadrilateral with both pairs of opposite sides parallel   parallelogram  
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a quadrilateral with four congruent sides   rhombus  
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5-sided polygon   pentagon  
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6-sided polygon   hexagon  
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7-sided polygon   heptagon  
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8-sided polygon   octagon  
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9-sided polygon   nonagon  
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10-sided polygon   decagon  
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Created by: mdavis30
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