Term
| 3-1: If two parallel planes... |
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...are cut by a third plane, then the lines of intersection are parallel
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Term
| post. 10: If two parallel lines are cut by a transversal, then corresponding... |
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Term
| 3-2: If 2 parallel lines are cut by a transversal, then alternate... |
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...interior angles are congruent
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Term
| 3-3: If 2 paallel lines are cut by a transversal, the same side... |
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Definition
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...interior angles are supplementary
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Term
| 3-4: If a transversal is perpendicular... |
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...to one of 2 parallel lines, then it is perpendicular to the other one also.
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Term
| 3-5:If two lines are cut by a transversal and alternate... |
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Definition
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...interior angles are congruent, then the lines are paralllel.
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Term
| 3-6: If 2 lines are cut by a transversal and same-side... |
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Definition
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...interior angles are supplementary, then the lines are parallel
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Term
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Definition
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...two lines perpendicular to the smae line are parallel
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Term
| 3-8: through a pointe outside a line, ther is exactly one line parallel... |
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| 3-9: Through a point outside a line, there is exactly one line perpendicular... |
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Term
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...parallel to a third line are parallel to eachother
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