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McDougal Littell Vocab.

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Question
Answer
Two lines that are coplaver and do not intersect.   parallel lines  
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Two lines that so not interect and are not coplanar.   skew lines  
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Two planes that do not intersect.   parallel planes  
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A line that intersects two or more coplanar lines at different points.   transversal  
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The perpendicular segment from a vertex of a triangle to the opposite side or to the line that contains the opposite side.   alternate interior angles  
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Two angles that are formed by two lines and a transversal and that lie outide the two lines on opposite sides of the transversal.   alternate exterior angles  
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Two angles that are formed by two lines and a transversal and that lie between the two lines on the same side of the transversal.   consecutive interior angles  
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A type of proof that uses arrows to show the flow of a logical argument. Statements are connected by arrows to show how each statement comes form the ones before it, and each reason is written below the statement it justifies.   flow proof  
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Two angles that are fomed by two lines and a transversal and occcupy corresponding positions.   corresponding angles  
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Two angles that are formed by two lines and a transversal and that lie between the two lines on the same side of the transversal.   consecutive interior angles  
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Two angles that are formed by two lines and a trasversl and that lie between the two lines on the same side of the transversal.   same side interior angles  
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