Definition:Transversal (Geometry)

Definition
A transversal of two lines lying in the same plane is a line which intersects them in two different points.

The transversal is said to cut the two lines that it crosses.


 * Alternate Interior Angles.png

Also see

 * Equal Alternate Angles implies Parallel Lines
 * Equal Corresponding Angles or Supplementary Interior Angles implies Parallel Lines
 * Parallelism implies Equal Alternate Angles, Corresponding Angles, and Supplementary Interior Angles