Chapter 3 Flashcards
Alternate Interior Angles Theorem
If two
parallel lines are cut by a transversal, then
the pairs of alternate interior angles are
congruent.
Alternate Exterior Angles Theorem
If two
parallel lines are cut by a transversal, then
the pairs of alternate exterior angles are
congruent.
Consecutive Interior Angles Theorem
If
two parallel lines are cut by a transversal,
then the pairs of consecutive interior angles
are supplementary.
Alternate Interior Angles Converse
If two
lines are cut by a transversal so the alternate
interior angles are congruent, then the lines
are parallel.
Alternate Exterior Angles Converse
If two
lines are cut by a transversal so the alternate
exterior angles are congruent, then the lines
are parallel.
Consecutive Interior Angles Converse
If
Segment congruence is reflexive, symmetric, two lines are cut by a transversal so the
and transitive. consecutive interior angles are
supplementary, then the lines are parallel.
Transitive Property of Parallel Lines
If two
lines are parallel to the same line, then they
are parallel to each other.
What happens if 2 lines intersect to form a liner pair of congruent angles?
If two lines intersect to form a linear pair of
congruent angles, then the lines are
perpendicular.
If 2 lines intersect to form 4 right angles..then they are?
If two lines are perpendicular, then they
intersect to form four right angles.
The two sides of the adjacent angles are perpendicular then…
If 2 sides of 2 adjacent angles are perpendicular, then the angles are
complementary.
Perpendicular Transversal Theorem
If a transversal is perpendicular to one of two
parallel lines, then it is perpendicular to the
other
Lines Perpendicular to a Transversal
Theorem
In a plane, if two lines are
perpendicular to the same line, then they are
parallel to each other.
