3-3 Proving Parallel and Perpendicular Lines Flashcards

1
Q

corresponding angles post. conv.-

A

if 2 angles are cut by a transversal,and corresponding angles are congruent, then the lines are parallel

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2
Q

same side interior angle converse

A

if 2 lines are cut by a transversal, and the same side interior angles are supplementary, then the lines are parallel

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3
Q

transitive prop. of parallel lines theorem

A

in a plane, is 2 lines are parallel to the same line, then there parallel to the same line.

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4
Q

lines perp. to a transversal theorem

A

in a plane if 2 lines are perp. to the same line, then they are parallel to each other.

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5
Q

perp. transversal theorem

A

in a plane, if a line is perpendicular to one of the two parallel lines, then its also perpendicular to the other.

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