如图,在三角形ABC中,AD⊥BC与D,AB+BD=DC,请你说说为什么∠ABC=2∠C提示:延长CB至E,使BE=BA
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![如图,在三角形ABC中,AD⊥BC与D,AB+BD=DC,请你说说为什么∠ABC=2∠C提示:延长CB至E,使BE=BA](/uploads/image/z/2779671-39-1.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2CAD%E2%8A%A5BC%E4%B8%8ED%2CAB%2BBD%3DDC%2C%E8%AF%B7%E4%BD%A0%E8%AF%B4%E8%AF%B4%E4%B8%BA%E4%BB%80%E4%B9%88%E2%88%A0ABC%3D2%E2%88%A0C%E6%8F%90%E7%A4%BA%EF%BC%9A%E5%BB%B6%E9%95%BFCB%E8%87%B3E%2C%E4%BD%BFBE%3DBA)
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