# Tangent Lines and the Radius of a Circle

##### This *Tangent Lines and the Radius of a Circle* activity & project also includes:

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Your Geometry learners will collaboratively prove that the tangent line of a circle is perpendicular to the radius of the circle. A deliberately sparse introduction allows for a variety of approaches to find a solution.

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##### Pros

- Includes very detailed description of the solution
- A teacher commentary is also included

##### Cons

- None

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