Circles, and triangles, and tangents, oh my! In the assessment task, learners first answer questions leading to the radius of an inscribed circle for a given right triangle. They then use the result to independently determine the radius of an inscribed circle for a different right triangle.

Concepts

triangles, congruent triangles, inscribed, congruence, tangent lines

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Additional Tags

math

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Instructional Ideas

• Use the resource as an in-class activity

Classroom Considerations

• Learners need to be aware of the hypotenuse-leg condition for congruent triangles
• Cass should have some experience with tangent lines to circles

Pros

• Scaffolding provides all learners the means to access solution
• Resource includes an answer key with rubric

Cons

• Diagram is haphazardly drawn

Common Core

HSG-CO.C.11 HSG-C.A.2 MP2 MP3 MP6 MP7