Parallel Lines cut by a transversal

Parallel lines cut by Transversal A line passing through two or more other lines in a plane is called a transversal. A transversal intersecting two parallel lines creates five different types of angle pairs. corresponding angles alternate interior angles alternate exterior angles vertical angles linear pairs

2 regions are formed

Corresponding Angles are congruent

Alternate Interior Angles are congruent

Alternate Exterior Angles are congruent

Vertical Angles are always congruent a=d b=c e=h f=g

Linear Pairs are Supplementary