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Vocabulary

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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Term
Definition
Point   An undefined term thought as a location with no size or dimension  
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Line   An undefined straight, continuous arrangement of infintely many points extending forever in two directions. A line has length, but no width or thickness, so it is one-dimensional  
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Plane   A flat surface that extends forever. It has infinite length and width but no thickness  
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Line Segment   Two points and all the points between them that are collinear with the two points  
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Collinear   Points that lie on the same line  
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Coplanar   Points that lie on the same plane  
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Ray   A point on a line,and all of the points of the line that lie on one side of the endpoint  
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End points   The point at either end of a segment or the first point of a ray  
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Oppsoite Rays   Collinear rays with the same endpoint  
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Intersection   The set points that objects have in common  
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Congruent   Objects that have the same measure  
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Bisect   To divide into two congruent parts  
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Midpoint   An object that intersects a segment into two congruent segments (bisector)  
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Angle   An object formed by two rays with the same endpoint  
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Vertex   The commom endpoint in an angle  
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Angle Bisector   An object that divides an angle into two congruent angles  
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Straight Angle   An angle with a measure of 180 degrees. (straight line)  
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Obtuse Angle   An angle with a measure of 90 degrees and 180 degrees  
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Right Angle   An angle with a measurement of 90 degrees  
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Acute Angle   An angle with a measurement less than 90 degrees  
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Complementary   Two angles whose sum is 90 degrees  
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Supplementary   Two angles whose sum is 180 degrees  
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Adjacent Angles   Angles that have a common side and a common vertex, but no common interior points  
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Vertical Angles   Two angles whose sides form two pairs of opposite rays  
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Created by: Carlos_F
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