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geometry postulates and theorems parallel lines

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Term
Definition
converse   switch the hypothesis and conlcusion  
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converse of the corresponding angles postulate   postulate: if two lines and a transversal form corresponding anglesthat are congruent, then the lines are parallel  
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converse of the alternate interior angles theorem   theorem:if the two lines and a transversal form alt. interior angles that are congruent ,then the the lines are parallel  
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converse of the same side interior angles theorem   if two lines and a transversal form same-side int. angles that are supplementary, then the lines are poarallel  
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converse of the alt. exterior angles theorem   if two lines and a transversal form alt. esterior angles that are congruent , then the two lines are parallel  
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alt. interior angles   non-adjacent interior angles that lie on oppostie side of the transversal alternate: opposite  
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alt. exterior angles   non-adjacent exterior angles that lie on opposite sides of the transversal  
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same-side interior angles   interior angles that lie in the same side of the transversal  
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corresponding angles   angles that lie on the same-side of the transversal and in the same position  
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parallel lines   coplanar liines that do not intersect. the same symbol // means  
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perpendicular lines   lines that intersect and form rigt angles the symbol (an upside down T)means  
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Created by: irma sorto
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