如图,一块含30°角的直角三角板……如图,一块含30°角的直角三角板,它的斜边AB=8cm,里面空心△DEF的各边与△ABC的对应边平行,且各对应边的距离都是1cm,那么△DEF的周长是___cm.(不要用相似,
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![如图,一块含30°角的直角三角板……如图,一块含30°角的直角三角板,它的斜边AB=8cm,里面空心△DEF的各边与△ABC的对应边平行,且各对应边的距离都是1cm,那么△DEF的周长是___cm.(不要用相似,](/uploads/image/z/12568158-54-8.jpg?t=%E5%A6%82%E5%9B%BE%2C%E4%B8%80%E5%9D%97%E5%90%AB30%C2%B0%E8%A7%92%E7%9A%84%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E6%9D%BF%E2%80%A6%E2%80%A6%E5%A6%82%E5%9B%BE%2C%E4%B8%80%E5%9D%97%E5%90%AB30%C2%B0%E8%A7%92%E7%9A%84%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E6%9D%BF%2C%E5%AE%83%E7%9A%84%E6%96%9C%E8%BE%B9AB%3D8cm%2C%E9%87%8C%E9%9D%A2%E7%A9%BA%E5%BF%83%E2%96%B3DEF%E7%9A%84%E5%90%84%E8%BE%B9%E4%B8%8E%E2%96%B3ABC%E7%9A%84%E5%AF%B9%E5%BA%94%E8%BE%B9%E5%B9%B3%E8%A1%8C%2C%E4%B8%94%E5%90%84%E5%AF%B9%E5%BA%94%E8%BE%B9%E7%9A%84%E8%B7%9D%E7%A6%BB%E9%83%BD%E6%98%AF1cm%2C%E9%82%A3%E4%B9%88%E2%96%B3DEF%E7%9A%84%E5%91%A8%E9%95%BF%E6%98%AF___cm%EF%BC%8E%EF%BC%88%E4%B8%8D%E8%A6%81%E7%94%A8%E7%9B%B8%E4%BC%BC%2C)
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