在△ABC中AB=AC,AD⊥BC,垂足为D,AN是△外角∠CAM的平分线,CE⊥AN,垂足为E ①矩形ABCD②当△ABC满足什么条件时,四边形ABCD是正方形是①矩形AEDC②当△ABC满足什么条件时,四边形AEDC是正方形
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![在△ABC中AB=AC,AD⊥BC,垂足为D,AN是△外角∠CAM的平分线,CE⊥AN,垂足为E ①矩形ABCD②当△ABC满足什么条件时,四边形ABCD是正方形是①矩形AEDC②当△ABC满足什么条件时,四边形AEDC是正方形](/uploads/image/z/5337517-13-7.jpg?t=%E5%9C%A8%E2%96%B3ABC%E4%B8%ADAB%3DAC%2CAD%E2%8A%A5BC%2C%E5%9E%82%E8%B6%B3%E4%B8%BAD%2CAN%E6%98%AF%E2%96%B3%E5%A4%96%E8%A7%92%E2%88%A0CAM%E7%9A%84%E5%B9%B3%E5%88%86%E7%BA%BF%2CCE%E2%8A%A5AN%2C%E5%9E%82%E8%B6%B3%E4%B8%BAE+%E2%91%A0%E7%9F%A9%E5%BD%A2ABCD%E2%91%A1%E5%BD%93%E2%96%B3ABC%E6%BB%A1%E8%B6%B3%E4%BB%80%E4%B9%88%E6%9D%A1%E4%BB%B6%E6%97%B6%2C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E6%98%AF%E6%AD%A3%E6%96%B9%E5%BD%A2%E6%98%AF%E2%91%A0%E7%9F%A9%E5%BD%A2AEDC%E2%91%A1%E5%BD%93%E2%96%B3ABC%E6%BB%A1%E8%B6%B3%E4%BB%80%E4%B9%88%E6%9D%A1%E4%BB%B6%E6%97%B6%2C%E5%9B%9B%E8%BE%B9%E5%BD%A2AEDC%E6%98%AF%E6%AD%A3%E6%96%B9%E5%BD%A2)
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