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10 Cards in this Set

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Alternate Interior Angles

Corresponding Angles Theorems
If two parallel lines are cut by a transversal, then the pairs of alternate interior angles are congruent.
Consecutive Interior Angles
If two parallel lines are cut by a transversal, then the pairs of consecutive interior angles are supplementary.
Alternate Exterior Angles
If two parallel lines are cut by a transversal, then the pairs of alternate exterior angles are congruent.
Perpendicular Transversal
If a transversal is perpendicular to one of the two parallel lines, then it is perpendicular to the other.
Corresponding Angles Converse
If two lines are cut by a transversal so that corresponding angles are congruent, then then lines are parallel.
Alternate Interior Angles Converse
if two lines are cut by a transversal so that the alternate interior angles are congruent, then the lines are parallel.
Consecutive Interior Angles Converse
If two lines are cut by a transversal so the consecutive interior angles are supplementary, then the lines are parallel
Alternate Exterior Angles Converse
If two lines are cut by a transversal so that alternate exterior angles are congruent, then the lines are parallel.
Parallel Postulate
If there is a line and a point not on the line, then there is exactly one line through the point parallel to the given line.
Perpendicular Postulate
If there is a line and a point not on the line, then there is exactly one line through the point perpendicular to the given line.