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Sum of Quad. Radii (Posted on 2008-04-02) Difficulty: 3 of 5
Let ABCD be a cyclic quadrilateral. Let rA, rB, rC, and rD be the inradii of triangles BCD, CDA, DAB, and ABC respectively.

Prove that rA + rC = rB + rD.

See The Solution Submitted by Bractals    
Rating: 2.3333 (3 votes)

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  Subject Author Date
SolutionRadii thriller!Chesca Ciprian2008-04-03 11:56:59
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