14.2全等三角形的判定“SAS”专项练习题 2025-2026学年人教版八年级数学上册

全等三角形的判定“SAS”专项练习题

一、解答题，解答应写出文字说明，证明过程或演算步骤。

1. 如图，和相交于点，，求证．

                                                                                                     

2.如图，点是线段的中点，，求证：．

                                                                                                      

 

                                                                                     

3.如图，，平分，求证．

                                                                                                  

4.如图，为上一点，点，分别在两侧， ，，求证：．

                                                                                                             
             

                                                                                  

5.如图，，求证：．

                                                                                                 

6.已知：如图，，，分别是，的中点．求证：．

                                            

                                                                                                   

7.如图，在中，为边上的中线，延长到点，使，连接，

求证：≌。

 

 

8.如图，，，求证：．

                        

                                                                                                  

 9.如图，，，求证：．

                                                                                                                    

10.已知：如图，点，，，在一条直线上，，，．

求证：．

                                                                                                                  
                    

                                                                                              

11.如图，点，，，在同一条直线上，，，，求证：．

                                                                                                          

                       

                                                                                   

12.如图，已知，，，在同一条直线上，，，求证：．