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Geometry Terms

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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Geometry Term
Definition
Point   Location in space with no size  
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Line   Series of points that extends in two directions without end.  
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Intersecting lines   Two lines that have exactly one point in common.  
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Skew lines   Lines that do not intersect, are not parallel and do not lie in the same plane.  
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Adjacent Angles   Angles that share a vertex and have a common side.  
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Vertical Angles   Angles formed by two intersecting lines, are opposite each other and are congruent.  
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Congruent Angles   Angles that have the same measure.  
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Supplementary Angles   Two angles that sum to 180 degrees.  
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Complementary Angles   Two angles that sum to 90 degrees.  
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Transversal   A line that intersects two other lines.  
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Corresponding Angles   Angles that lie on the the same side of the transversal and in corresponding positions.  
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Alternate Interior Angles   Angles in the interior of a pair of lines and on opposite sides of the transversal.  
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Plane   A flat surface with no thickness that extends in all directions.  
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Segment   A part of a line that has 2 endpoints.  
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Ray   A part of a line that has exactly one endpoint.  
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Parallel   Two lines that lie in the same plane and do not intersect.  
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