上海市徐汇区2015-2016学年八年级上期末数学试卷含答案解析  
6．下列命题的逆命题是假命题的是（　　）                                            
A．同位角相等，两直线平行                                                                    
B．在一个三角形中，等边对等角                                                             
C．全等三角形三条对应边相等                                                                
D．全等三角形三个对应角相等                                                                
【考点】命题与定理．                                                                        
【分析】分别写出原命题的逆命题，然后判断真假即可．                                
【解答】解：A、逆命题为两直线平行，同位角相等，正确，为真命题；               
B、逆命题为：在一个三角形中等角对等边，正确，是真命题；                      
C、逆命题为：三条边对应相等的三角形全等，正确，是真命题；                   
D、逆命题为：三个角对应相等的三角形全等，错误，为假命题，                   
故选D．                                                                                             
【点评】本题考查了命题与定理的知识，解题的关键是能够正确的写出原命题的逆命题，难度不大．