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16 Cards in this Set

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 parallel lines 2 lines that are parallel if they're coplanar and don't intersect skew lines 2 lines are skew if they aren't coplanar and don't intersect transversal line that intersects 2 or more coplanar lines @different pts corresponding angles if they occupy corresponding postitions alternate exterior angles if they lie outside 2 lines on opposite sides of the transversal alternate interior angles if they lie b/n the 2 lines on opposite sides of the transversal consecutive interior lines(same side interior angles) if they lie b/n 2 lines on the same side of the transversal Postulate 13: parallel postulate if there is a line and a pt not one the line, then there is exactly one line thru the pt parallel to the given line postulate 14: perpendicular postulate if there is a line and a pt not on the line,then there is exactly one line thru the pt perpendicular to the given line theorem 3.1 if 2 lines intersect to form a linear pair of congruent angles, then the lines are perpendicular theorem 3.2 if 2 lines are perpendicular, then they intersect to form 4 right angles postulate 15: corresponding angles postulate if the lines r parallel then they'r congruent thrm alternate interior angles 2 lines r alternate interior angles iff the pairs of a.i.a r congruent. thrm 3.5 consecutive interior angles if 2 parallel lines r cut by a transversal, then the pairs of c.i.a. are supplementary thrm alternate exterior angles if 2 parallel lines r cut by a transversal, then they'r congruent thrm perpendicular transversal if a transversal is perpendicular to 1 of 2 parallel lines, then it's perpendicular to the other