Intersecting Tangent and Secant Lines of Circles

Interpret and apply the relationships between tangent and secant lines. The instructor explains the relationships of the angles and segments created by intersecting tangent and secant lines. 

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • After introducing each rule, have students explain the rule to a classmate in their own words
  • Pause the video after each rule to ask and answer clarifying questions
Classroom Considerations
  • Learners should be familiar with tangent and secant lines
  • The 19th installment in a series of 40 video lessons
  • This resource is only available on an unencrypted HTTP website. It should be fine for general use, but don’t use it to share any personally identifiable information
Pros
  • Connects the segment and angle rules of secant and tangent lines to the formation of similar triangles
Cons
  • Explanation of the tangent/secant rules at the beginning is difficult to follow
Common Core