Triangles inscribed in circles (Performance task)

[Anonymous]

The PDF linked below challenges a student to use geometric properties of circles and triangles to prove that two triangles are congruent. A student must be able to use congruency and corresponding parts to reason about lengths of sides. A student must be able to construct lines to make sense of a diagram.  A student needs to use geometric properties to find the radius of a circle inscribed in a right triangle.

http://www.insidemathematics.org/common-core-math-tasks/high-school/HS-G-2007%20Circles%20in%20Triangles.pdf

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