Transversal/Parallel Line Theorems Flashcards
Angle Addition Postulate
If an angle is made up of two individual angles, the measure of the whole angle is equal to the sum of the measure of the two individual angles
Vertical Angles Theorem
Vertical angles are congruent
Corresponding Angles Theorem
If a transversal intersects parallel lines, then the resulting corresponding angles are congruent
Alternate Exterior Angles Theorem
If a transversal intersects two parallel lines, then the resulting alternate exterior angles are congruent.
Alternate Interior Angles Theorem
If a transversal intersects two parallel lines, then the resulting alternate angles are congruent.
Same Side Interior Angles
If a transversal intersects two parallel lines, then the resulting same side interior angles are supplementary.
Converse of Corresponding Angles Theorem
If the corresponding angles of two lines cut by a transversal are congruent, then the two lines are parallel
Converse of Same Side Interior Angles Theorem
If the same-side interior angles of two lines cut by a transversal are supplementary, then the two lines are parallel
Converse of Alternate Exterior Angles Theorem
If the alternate exterior angles of two lines cut by a transversal are congruent, then the two lines are parallel
Converse of Alternate Interior Angles Theorem
If the alternate interior angles of two lines cut by a transversal are congruent, then the two lines are parallel