如图,在三角形ABC中,CD⊥AB,DE⊥AC,DF⊥BC,垂足分别为D,E,F.(1)CA*CE与CB*CF相等吗?为什么?(2)连接EF,交CD于点O,线段OC,OF,OE,OD成比例吗?
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![如图,在三角形ABC中,CD⊥AB,DE⊥AC,DF⊥BC,垂足分别为D,E,F.(1)CA*CE与CB*CF相等吗?为什么?(2)连接EF,交CD于点O,线段OC,OF,OE,OD成比例吗?](/uploads/image/z/14574666-66-6.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2CCD%E2%8A%A5AB%2CDE%E2%8A%A5AC%2CDF%E2%8A%A5BC%2C%E5%9E%82%E8%B6%B3%E5%88%86%E5%88%AB%E4%B8%BAD%2CE%2CF.%EF%BC%881%EF%BC%89CA%2ACE%E4%B8%8ECB%2ACF%E7%9B%B8%E7%AD%89%E5%90%97%3F%E4%B8%BA%E4%BB%80%E4%B9%88%3F%EF%BC%882%EF%BC%89%E8%BF%9E%E6%8E%A5EF%2C%E4%BA%A4CD%E4%BA%8E%E7%82%B9O%2C%E7%BA%BF%E6%AE%B5OC%2COF%2COE%2COD%E6%88%90%E6%AF%94%E4%BE%8B%E5%90%97%3F)
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