Problem #PRU-57808

Problems Geometry Plane geometry Plane transformations Parallel translation
 13–15  4.0

Problem

Two circles of radius \(R\) touch at point \(B\). On one of them, point \(D\) is chosen and on the other point \(E\) is chosen. These points have a property of \(\angle DBE = 90^{\circ}\). Prove that \(DE = 2R\).

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