Geometry Unit Three Test Flashcards
Perpendicular lines intersect to form?
Right angles
If two intersecting lines form congruent adjacent angles, then the lines are . . .
Perpendicular
If two lines are perpendicular they form..
Congruent adjacent angles
Alternate interior angles
Parallel lines cut by a transversal form congruent alternate interior angles
Corresponding angles
Parallel lines cut by a transversal form congruent corresponding angles
Alternate exterior angles
Parallel lines cut by a transversal form congruent alternate exterior angles
Same side interior angles postulate
Parallel lines cut by a transversal form supplementary same side interior angles
Same side exterior angles postulate
Parallel lines cut by a transversal form supplementary same side exterior angles
If two lines cut by a transversal form congruent alternate interior or exterior angles then
The lines are parallel
If two lines cut by a transversal form congruent corresponding angles
Then the lines are parallel
If two lines are perpendicular to the same line
They are parallel to each other
If two lines are parallel to the same line
Then they are parallel to each other
If a line is perpendicular to 1 of 2 parallel lines
It is also perpendicular to the other
If a line is parallel to one of two lines then
It is also parallel to the other
If the interior or exterior angles on one side of a transversal are supp
Then the lines are are parallel
