如图,已知:在△ABC内接于⊙O,⊙O’过点C与AC交于E,与⊙O交于D,连结AD并延长与⊙O’交于F,与BC的延长线交于G,连结EF.要使EF//CG,△ABC应满足什么条件?请补充上你认为缺少的条件后,证明EF//CG(要
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![如图,已知:在△ABC内接于⊙O,⊙O’过点C与AC交于E,与⊙O交于D,连结AD并延长与⊙O’交于F,与BC的延长线交于G,连结EF.要使EF//CG,△ABC应满足什么条件?请补充上你认为缺少的条件后,证明EF//CG(要](/uploads/image/z/12493445-5-5.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5%EF%BC%9A%E5%9C%A8%E2%96%B3ABC%E5%86%85%E6%8E%A5%E4%BA%8E%E2%8A%99O%2C%E2%8A%99O%E2%80%99%E8%BF%87%E7%82%B9C%E4%B8%8EAC%E4%BA%A4%E4%BA%8EE%2C%E4%B8%8E%E2%8A%99O%E4%BA%A4%E4%BA%8ED%2C%E8%BF%9E%E7%BB%93AD%E5%B9%B6%E5%BB%B6%E9%95%BF%E4%B8%8E%E2%8A%99O%E2%80%99%E4%BA%A4%E4%BA%8EF%2C%E4%B8%8EBC%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%A4%E4%BA%8EG%2C%E8%BF%9E%E7%BB%93EF.%E8%A6%81%E4%BD%BFEF%2F%2FCG%2C%E2%96%B3ABC%E5%BA%94%E6%BB%A1%E8%B6%B3%E4%BB%80%E4%B9%88%E6%9D%A1%E4%BB%B6%3F%E8%AF%B7%E8%A1%A5%E5%85%85%E4%B8%8A%E4%BD%A0%E8%AE%A4%E4%B8%BA%E7%BC%BA%E5%B0%91%E7%9A%84%E6%9D%A1%E4%BB%B6%E5%90%8E%2C%E8%AF%81%E6%98%8EEF%2F%2FCG%EF%BC%88%E8%A6%81)
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