Parallel and Perpendicular Lines
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These flashcards cover key vocabulary and theorems related to parallel and perpendicular lines, as well as properties of angles formed by transversals.
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10 Terms
1
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Parallel Lines
Two lines that never intersect.
2
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Transversal
A line that intersects two or more lines.
3
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Linear Pair Theorem
A pair of angles that are 180 degrees
4
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Corresponding Angles
1 and 5 (congruent)
5
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Alternate Interior Angles
3 and 5 (Congruent)
6
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Converse of Corresponding Angles theorum
If 1 and 5 are congruent, then a and b are parallel
7
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Same Side Interior Angles
3 and 5 (add up to 180 degrees)
8
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Alternate Exterior Angles
2 and 7 (congruent)
9
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Supplementary Angles
Two angles that add up to 180°.
10
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Vertical Angles Theorem
Vertical angles are congruent when two lines intersect.
Note 
Flashcards (56)