Parallel Lines |
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Parallel Lines are two lines in a geometric plane that never intersect. |
Figure 1. |
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Lines A and B are parallel. This can be represented by writing A || B.
Perpendicular Lines |
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Perpendicular Lines are two lines in a geometric plane that intersect to form a 90 degree angle. |
Figure 2. |
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Above, lines A and B are now perpendicular.