Instructional Video
Sophia Learning

Sophia: Consecutive Exterior Angles Converse

9th - 10th
This video lesson demonstrates how to determine if two lines are parallel by using the converse of the consecutive-exterior angles theorem. Students can check their understanding with an assessment.
Instructional Video
Sophia Learning

Sophia: Consecutive Exterior Angles Converse

9th - 10th
This video lesson demonstrates how to determine if two lines are parallel by using the converse of the consecutive-exterior angles theorem. Students can check their understanding with an assessment.
Instructional Video
Shmoop University

Shmoop: Parallel Lines and Transversals

9th - 10th Standards
A video clip showing parallel lines and transversals. Using everyday items to familiarize the student with the concept.