In the triangle ABC, D is a point on the side of BC, e is a point on AC, and satisfies ad = AB, angle ade = angle C 1. Prove the angle Dec = angle B 2 prove the square of AB = aexac

In the triangle ABC, D is a point on the side of BC, e is a point on AC, and satisfies ad = AB, angle ade = angle C 1. Prove the angle Dec = angle B 2 prove the square of AB = aexac

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