如图,△ABC的周长为30厘米,把三角形ABC的边AC对折,使顶点C和点A重合,折痕交BC于点D,交AC边于点E,连接AD,若AE=4cm,则三角形ABD的周长是?
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![如图,△ABC的周长为30厘米,把三角形ABC的边AC对折,使顶点C和点A重合,折痕交BC于点D,交AC边于点E,连接AD,若AE=4cm,则三角形ABD的周长是?](/uploads/image/z/6955783-7-3.jpg?t=%E5%A6%82%E5%9B%BE%2C%E2%96%B3ABC%E7%9A%84%E5%91%A8%E9%95%BF%E4%B8%BA30%E5%8E%98%E7%B1%B3%2C%E6%8A%8A%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E8%BE%B9AC%E5%AF%B9%E6%8A%98%2C%E4%BD%BF%E9%A1%B6%E7%82%B9C%E5%92%8C%E7%82%B9A%E9%87%8D%E5%90%88%2C%E6%8A%98%E7%97%95%E4%BA%A4BC%E4%BA%8E%E7%82%B9D%2C%E4%BA%A4AC%E8%BE%B9%E4%BA%8E%E7%82%B9E%2C%E8%BF%9E%E6%8E%A5AD%2C%E8%8B%A5AE%3D4cm%2C%E5%88%99%E4%B8%89%E8%A7%92%E5%BD%A2ABD%E7%9A%84%E5%91%A8%E9%95%BF%E6%98%AF%3F)
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