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Definition
| If two lines intersect, the they intersect at exactly one point. |
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Definition
| If there is a line and a point not on the line, then exactly one plane contains them. |
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Definition
| If two lines intersect, then there exists exactly one plane that contains them. |
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Definition
| If two parallel planes are cut by a third plane, then the lines of intersection are parallel. |
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Definition
| If two lines in a plane are perpendicular to the same line, then they are parallel to each other. |
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Definition
| In a plane, if a line in perpendicular to one of two parallel lines, then it is perpendicular to the other one. |
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Term
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Definition
| If two lines are perpendicular, then they form congruent adjacent angles |
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Term
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Definition
| If two lines form congruent adjacent angles, then they are perpendicular. |
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Term
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Definition
| All right angles are congruent |
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Term
| Theorem 5-7: Transitive Property of Parallel Lines |
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Definition
| If two lines are parallel to the same line, then they are parallel to one another. |
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Term
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Definition
| If a point lies on the perpendicular bisector of a segment, then the point is equidistant from the endpoints of the segment |
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