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find angle (kind of easy)

Source: Romanian District Olympiad 2016, Grade VII, Problem 3

October 4, 2018
geometryPure geometry

Problem Statement

Let be a triangle ABC ABC with ∠BAC=90∘. \angle BAC = 90^{\circ } . On the perpendicular of BC BC through B, B, consider D D such that AD=BC. AD=BC. Find ∠BAD. \angle BAD.
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