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Math flash cards Geometry

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
Point   an exact location. It is usually represented as a dot, but it has no at all.  
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Line   is a straight path that extends without end in opposite directions.  
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Plane   a perfectly flat surface that extends infinitly in all directions  
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Ray   A part that is a part of a line. It has one endpoint and extends and extends without end in one direction.  
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Line Segment   a part of a line on a ray that extends from one endpoint to another.  
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Angle   formed by two rays with a common endpoint.  
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Vertex   the common point  
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Right angle   an angle that measures exactly 90  
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Acute Angle   an angle that measures less than 90  
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Obtuse angle   an angle that measures more than 90 but less than 180  
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Straight Angle   an angle that measures exactly 180  
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Complementary angle   if the sum of two angles measures is 90  
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Supplementary angle   if the sum of measures of two angles is 180  
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Polygon   a closed plane figure formed by three or more line segments  
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Regular Polygon   a polygon in which all sides are congruent and all angles are congruent.  
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