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In the triangle ABC, ab = AC, D is the midpoint of AB, de ⊥ AB intersects AC at point E, the circumference of the triangle BCE is known to be 10, and ac-bc = 2, so the circumference of the triangle EBC can be obtained
In the triangle ABC, ab = AC, D is the midpoint of AB, de ⊥ AB intersects AC at point E, the circumference of the triangle BCE is known to be 10, and ac-bc = 2, so the circumference of the triangle EBC can be obtained
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