题目内容
(本题6分)如图,在△ABC中,D是BC边上的点(不与B,C重合),F,E分别是AD及其延长线上的点,CF∥BE. 请你添加一个条件,使△BDE≌△CDF (不再添加其它线段,不再标注或使用其他字母),并给出证明.
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(1)你添加的条件是: ▲ ;
(2)证明:
(1)
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(2)略解析:
解:
(1)
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(2)以
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∵CF∥BE,
∴∠FCD﹦∠EBD.
又∵
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∴△BDE≌△CDF.…………………4分
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(本题6分)