Instructional Video
Sophia Learning

Sophia: Corresponding Angles Converse: Lesson 5

9th - 10th
This lesson [3:29] will demonstrate how to prove lines parallel with the converse of the corresponding angles postulate. It is 5 of 6 in the series titled "Corresponding Angles Converse."
Instructional Video
Sophia Learning

Sophia: Drawing Line Relationships: Lesson 2

9th - 10th Standards
This lesson will demonstrate how to draw intersecting, perpendicular, and parallel lines.
Instructional Video
Khan Academy

Khan Academy: Parallel & Perpendicular Lines Intro

4th Standards
Learn the properties of parallel and perpendicular lines so that you can easily identify them. [2:08]
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.