已知△ABC和△A ′B ′C ′,∠C= ∠C ′=90 °,AC=A ′C ′,要判定△ABC ≌△A ′B ′C ′,必须添加条件为①( ) 或②
题型:同步题难度:来源:
已知△ABC和△A ′B ′C ′,∠C= ∠C ′=90 °,AC=A ′C ′,要判定△ABC ≌△A ′B ′C ′,必须添加条件为①( ) 或②( )或③( )或④( ) |
答案
①AB=A ′B ′ ②BC=B ′C ′ ③∠A= ∠A ′ ④∠B= ∠B ′ |
举一反三
已知:如图,AD∥BC,∠B=∠D.求证:△ADC≌CBA. |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026223322-22646.png) |
已知AB∥DE,BC∥EF,D,C在AF上,且AD=CF,求证:△ABC≌△DEF. |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026223318-93691.png) |
已知:点A、F、E、C在同一条直线上,AF=CE,BE∥DF,BE=DF.求证:△ABE≌△CDF. |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026223313-17765.png) |
如图所示,已知AE⊥AB,AF⊥AC,AE=AB,AF=AC.求证:(1)EC=BF;(2)EC⊥BF. |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026223309-83606.png) |
如图:DF=CE,AD=BC,∠D=∠C.求证:△AED≌△BFC. |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026223302-76269.png) |
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