已知PQ平行于RS,入射光线AB平行于反射光线CD,角1等于角2.角三等于角四.求证:PQ 平行于已知PQ平行于RS,入射光线AB平行于反射光线CD,角1等于角2.角三等于角四.求证:PQ 平行于RS
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![已知PQ平行于RS,入射光线AB平行于反射光线CD,角1等于角2.角三等于角四.求证:PQ 平行于已知PQ平行于RS,入射光线AB平行于反射光线CD,角1等于角2.角三等于角四.求证:PQ 平行于RS](/uploads/image/z/8526595-67-5.jpg?t=%E5%B7%B2%E7%9F%A5PQ%E5%B9%B3%E8%A1%8C%E4%BA%8ERS%2C%E5%85%A5%E5%B0%84%E5%85%89%E7%BA%BFAB%E5%B9%B3%E8%A1%8C%E4%BA%8E%E5%8F%8D%E5%B0%84%E5%85%89%E7%BA%BFCD%2C%E8%A7%921%E7%AD%89%E4%BA%8E%E8%A7%922.%E8%A7%92%E4%B8%89%E7%AD%89%E4%BA%8E%E8%A7%92%E5%9B%9B.%E6%B1%82%E8%AF%81%EF%BC%9APQ+%E5%B9%B3%E8%A1%8C%E4%BA%8E%E5%B7%B2%E7%9F%A5PQ%E5%B9%B3%E8%A1%8C%E4%BA%8ERS%2C%E5%85%A5%E5%B0%84%E5%85%89%E7%BA%BFAB%E5%B9%B3%E8%A1%8C%E4%BA%8E%E5%8F%8D%E5%B0%84%E5%85%89%E7%BA%BFCD%2C%E8%A7%921%E7%AD%89%E4%BA%8E%E8%A7%922.%E8%A7%92%E4%B8%89%E7%AD%89%E4%BA%8E%E8%A7%92%E5%9B%9B.%E6%B1%82%E8%AF%81%EF%BC%9APQ+%E5%B9%B3%E8%A1%8C%E4%BA%8ERS)
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