解答题-证明题 困难0.15 引用1 组卷207
如图,在△ABC中,CD⊥AB,DE⊥AC,DF⊥BC,垂足分别为D,E,F.
(1)求证:CE•CA=CF•CB;
(2)EF交CD于点O,求证:△COE∽△FOD;
![](https://img.xkw.com/dksih/QBM/2020/8/15/2528592060792832/2530608014745600/STEM/e05fc88659ff4bd4bcc8d5f8013bf79b.png?resizew=157)
(1)求证:CE•CA=CF•CB;
(2)EF交CD于点O,求证:△COE∽△FOD;
![](https://img.xkw.com/dksih/QBM/2020/8/15/2528592060792832/2530608014745600/STEM/e05fc88659ff4bd4bcc8d5f8013bf79b.png?resizew=157)
19-20九年级上·四川攀枝花·期末
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