Transversals

A transversal is a line that intersects at least two other lines.



The red line is the transversal in each example:

Transveral Examples
Transversal crossing two lines
 this transversal crosses two parallel lines ... and this one cuts across three lines

Pairs of Angles

parallel lines angle example

When parallel lines are crossed by a transversal many angles are the same, as in this example:

See Parallel Lines and Pairs of Angles to learn more.

intersecting rails
Lots of angles match up here!

 

Vertically Opposite Angles Corresponding Angles Alternate Interior Angles Alternate Exterior Angles Consecutive Interior Angles Geometry Index