Explore the concept of tangent lines. In this tangent line lesson, learners graph a circle and two lines on their graphing calculator using Cabri Jr. Students construct the lines so that they both intersect at a given point and are both tangent to a circle at two different points. Students measure angles and determine what type of angle is formed by the tangent line and the radius of the circle.

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##### Included Materials - Join to Access

- Exploring Tangents
- Activity