在△ABC的边BC、AC与AB上取点A1、B1、C1,线段A1B1、B1C1、C1A1分△ABC为四个面积在△ABC的边BC、CA与AB上取点A1、B1、C1,线段A1B1、B1C1、C1A1分△ABC为四个面积相等三角形,求证:A1、B1、C1是△ABC各边中
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![在△ABC的边BC、AC与AB上取点A1、B1、C1,线段A1B1、B1C1、C1A1分△ABC为四个面积在△ABC的边BC、CA与AB上取点A1、B1、C1,线段A1B1、B1C1、C1A1分△ABC为四个面积相等三角形,求证:A1、B1、C1是△ABC各边中](/uploads/image/z/8380321-25-1.jpg?t=%E5%9C%A8%E2%96%B3ABC%E7%9A%84%E8%BE%B9BC%E3%80%81AC%E4%B8%8EAB%E4%B8%8A%E5%8F%96%E7%82%B9A1%E3%80%81B1%E3%80%81C1%2C%E7%BA%BF%E6%AE%B5A1B1%E3%80%81B1C1%E3%80%81C1A1%E5%88%86%E2%96%B3ABC%E4%B8%BA%E5%9B%9B%E4%B8%AA%E9%9D%A2%E7%A7%AF%E5%9C%A8%E2%96%B3ABC%E7%9A%84%E8%BE%B9BC%E3%80%81CA%E4%B8%8EAB%E4%B8%8A%E5%8F%96%E7%82%B9A1%E3%80%81B1%E3%80%81C1%2C%E7%BA%BF%E6%AE%B5A1B1%E3%80%81B1C1%E3%80%81C1A1%E5%88%86%E2%96%B3ABC%E4%B8%BA%E5%9B%9B%E4%B8%AA%E9%9D%A2%E7%A7%AF%E7%9B%B8%E7%AD%89%E4%B8%89%E8%A7%92%E5%BD%A2%2C%E6%B1%82%E8%AF%81%EF%BC%9AA1%E3%80%81B1%E3%80%81C1%E6%98%AF%E2%96%B3ABC%E5%90%84%E8%BE%B9%E4%B8%AD)
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