将正方形ABCD折叠,使顶点A与CD边上的点M重合,折痕交AD于E,交BC于F,边BC折叠后与边BC交于G.若M为CD边上任意一点,设AB=2a,问三角形CGM的周长是否与点M的位置有关?若有关.请把三角形CGM的周长用含有
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![将正方形ABCD折叠,使顶点A与CD边上的点M重合,折痕交AD于E,交BC于F,边BC折叠后与边BC交于G.若M为CD边上任意一点,设AB=2a,问三角形CGM的周长是否与点M的位置有关?若有关.请把三角形CGM的周长用含有](/uploads/image/z/8856789-69-9.jpg?t=%E5%B0%86%E6%AD%A3%E6%96%B9%E5%BD%A2ABCD%E6%8A%98%E5%8F%A0%2C%E4%BD%BF%E9%A1%B6%E7%82%B9A%E4%B8%8ECD%E8%BE%B9%E4%B8%8A%E7%9A%84%E7%82%B9M%E9%87%8D%E5%90%88%2C%E6%8A%98%E7%97%95%E4%BA%A4AD%E4%BA%8EE%2C%E4%BA%A4BC%E4%BA%8EF%2C%E8%BE%B9BC%E6%8A%98%E5%8F%A0%E5%90%8E%E4%B8%8E%E8%BE%B9BC%E4%BA%A4%E4%BA%8EG.%E8%8B%A5M%E4%B8%BACD%E8%BE%B9%E4%B8%8A%E4%BB%BB%E6%84%8F%E4%B8%80%E7%82%B9%2C%E8%AE%BEAB%3D2a%2C%E9%97%AE%E4%B8%89%E8%A7%92%E5%BD%A2CGM%E7%9A%84%E5%91%A8%E9%95%BF%E6%98%AF%E5%90%A6%E4%B8%8E%E7%82%B9M%E7%9A%84%E4%BD%8D%E7%BD%AE%E6%9C%89%E5%85%B3%3F%E8%8B%A5%E6%9C%89%E5%85%B3.%E8%AF%B7%E6%8A%8A%E4%B8%89%E8%A7%92%E5%BD%A2CGM%E7%9A%84%E5%91%A8%E9%95%BF%E7%94%A8%E5%90%AB%E6%9C%89)
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