如图,AB是圆O直径,C是弧BG的中点,CD垂直AB于D,BG交CD,AC于E,F求证:(1)CF=2DE(2)OE是三角形ABF的中位线(3)若D是OB中点,则三角形CEF是等边三角形图发不上来.
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![如图,AB是圆O直径,C是弧BG的中点,CD垂直AB于D,BG交CD,AC于E,F求证:(1)CF=2DE(2)OE是三角形ABF的中位线(3)若D是OB中点,则三角形CEF是等边三角形图发不上来.](/uploads/image/z/13327230-30-0.jpg?t=%E5%A6%82%E5%9B%BE%2CAB%E6%98%AF%E5%9C%86O%E7%9B%B4%E5%BE%84%2CC%E6%98%AF%E5%BC%A7BG%E7%9A%84%E4%B8%AD%E7%82%B9%2CCD%E5%9E%82%E7%9B%B4AB%E4%BA%8ED%2CBG%E4%BA%A4CD%2CAC%E4%BA%8EE%2CF%E6%B1%82%E8%AF%81%EF%BC%9A%EF%BC%881%EF%BC%89CF%3D2DE%EF%BC%882%EF%BC%89OE%E6%98%AF%E4%B8%89%E8%A7%92%E5%BD%A2ABF%E7%9A%84%E4%B8%AD%E4%BD%8D%E7%BA%BF%EF%BC%883%EF%BC%89%E8%8B%A5D%E6%98%AFOB%E4%B8%AD%E7%82%B9%2C%E5%88%99%E4%B8%89%E8%A7%92%E5%BD%A2CEF%E6%98%AF%E7%AD%89%E8%BE%B9%E4%B8%89%E8%A7%92%E5%BD%A2%E5%9B%BE%E5%8F%91%E4%B8%8D%E4%B8%8A%E6%9D%A5.)
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