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Stack #31052

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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Vocab.
Definitions
Ray   a straight line extending on in one direction forever  
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Line segment   o portion of a line that has two end points.  
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Line   a line that gose on forever in both directions  
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Parallel Lines   two lines on the same plane that will never intersect  
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congruent segments   angles with the same measures  
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Perpendicular   two lines intersecting to form a right angle  
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plane   a flat surface that extends forever  
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collinear   points that lie on the same line  
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coplanar   points and lines that lie on the same plane  
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intersection lines   lines that meet at a point  
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Angle   The figure formed by two lines diverging from a common point.  
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vertex   The point at which the sides of an angle intersect  
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acute angle   an angle less then 90°  
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straight angle   an angle of 180°  
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obtuse angle   an angle less then 180° but greater than 90°  
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complementary angles   the sum of two angles put together is 90°  
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congruent angles   angles with the smae measures  
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vertical angles   Either of two angles formed by two intersecting lines and lying on opposite sides of the point of intersection.  
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Adjacent angles   complementary angles share a common side and vertex. the sum of the two angles measures is 90°  
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tranaversal   A line that intersects a system of other lines.  
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Created by: x30oColleen
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