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Problem 353. Tangential quadrilateral, Diagonals, Incircles, Inradii.
Level: High School, College, SAT Prep.

The figure shows a tangential quadrilateral ABCD. Diagonals AC and BD meet at E. If r1, r2, r3, and r4, are the radii of the incircles of triangles ABE, BCE, CDE, and ADE, prove that Conclusion to prove.

Tangential quadrilateral, incircles, inradii


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