下列条件能判断两个三角形全等的是( )
①两角及一边对应相等；
②两边及其夹角对应相等；
③两边及一边所对的角对应相等；
④两角及其夹边对应相等。
A．①③;
B．②④;
C．②③④;
D．①②④．
D．
题目分析：①两边及其一边对应相等可以利用ASA或AAS判定，故正确；
②两边及其夹角对应相等可以利用SAS判定，故正确；
③两边及其一边的对角对应相等不能判定两三角形全等，故错误；
④两角及其夹边对应相等符合ASA定理，故正确，
故选D．
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| I ( ) 1. How are you? ( ) 2. ls this your pen? ( ) 3. What colour is it? ( ) 4. What's in Picture One? ( ) 5. May I have a look? ( ) 6. Nice to meet you. ( ) 7. Good night! ( ) 8. Where are you from? ( ) 9. May I come in? ( ) 10. Are you Lin Tao? | II A. Yellow. B. Fine, thank you. C. It's a pencil. D. Yes, it is. E. Sure. F. Yes, please. G. Yes, I am. H. I'm from China. I. Good night! J. Nice to meet you, too. |