mathleaks.com Start chapters home Start History history History expand_more
{{ item.displayTitle }}
navigate_next
No history yet!
Progress & Statistics equalizer Progress expand_more
Student
navigate_next
Teacher
navigate_next
Expand menu menu_open Minimize
{{ filterOption.label }}
{{ item.displayTitle }}
{{ item.subject.displayTitle }}
arrow_forward
No results
{{ searchError }}
search
menu_open home
{{ courseTrack.displayTitle }}
{{ statistics.percent }}% Sign in to view progress
{{ printedBook.courseTrack.name }} {{ printedBook.name }}
search Use offline Tools apps
Login account_circle menu_open

Converse Alternate Exterior Angles Theorem

Rule

Converse Alternate Exterior Angles Theorem

If a pair of alternate exterior angles formed by a transversal are congruent, the lines crossed are parallel lines.
For example, in the figure below the lines because the alternate exterior angles have the same measure.

The theorem is named the Converse Alternate Exterior Angles Theorem because the same thing holds true but in opposite order.