Parallel Lines and Transversals

Eight is the lucky number of angles when a line crosses two parallel lines. Scholars watch a concise video in the Socratica Geometry series to learn about angles made by parallel lines and a transversal. Using corresponding and vertical angles helps show that four of the eight angles are congruent.

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CCSS: Adaptable
Instructional Ideas

  • Have the class create graphic organizers summarizing angle relationships
Classroom Considerations

  • Pupils must have knowledge of vertical angles
  • Note that the video does not mention alternate interior or alternate exterior angles
Pros

  • Animations are simplistic but helpful
Cons

  • Very slow-paced video
Common Core