本课配套习题挑战模式1/5
                                    单选题
                                    
                                难度系数:
                                        
                                
                                    1.如图,△ACB≌△A′CB′,∠BCB′=30°,则∠ACA′的度数为(  )
                                
                                                                    
                            
                                | A: 20° | 
| B: 30° | 
| C: 35° | 
| D: 40° | 
                                
                                
                                一次做对,真牛!
                                
                            
                        +5奖励规则>
                            - 提示1:IOacrOmimOagueaNruWFqOetieS4ieinkuW9oueahOaAp+i0qOW5tuaJvua4heWFqOetieS4ieinkuW9oueahOWvueW6lOinkuWNs+WPry4=
 - 答案:Qg==
							6Kej77ya4oi14pazQUNC4omM4pazQeKAskNC4oCyPGJyPuKItOKIoEFDQj3iiKBB4oCyQ0LigLI8YnI+5Y2z4oigQUNB4oCyK+KIoEHigLJDQj3iiKBC4oCyQ0Ir4oigQeKAskNC77yMPGJyPuKItOKIoEFDQeKAsj3iiKBC4oCyQ0LvvIw8YnI+5Y+I4oigQuKAskNCPTMwwrA8YnI+4oi04oigQUNB4oCyPTMwwrAuIDxicj7mlYXpgIlCLiA=
 
本课配套习题挑战模式2/5
                                    单选题
                                    
                                难度系数:
                                        
                                
                                    2.如图,△ABC≌△DEF,BE=4,AE=1,则DE的长是(  )
                                
                                                                    
                            
                                | A: 5cm | 
| B: 4cm | 
| C: 3cm | 
| D: 2cm | 
                                
                                
                                一次做对,真牛!
                                
                            
                        +5奖励规则>
                            - 提示1:IOagueaNruWFqOetieS4ieinkuW9ouWvueW6lOi+ueebuOetie+8jERFPUFC77yM6ICMQUI9QUUrQkXvvIzku6PlhaXmlbDmja7orqHnrpfljbPlj68u
 - 答案:QQ==
							6Kej77ya4oi14pazQUJD4omM4pazREVGPGJyPuKItERFPUFCPGJyPuKItUJFPTTvvIxBRT0xPGJyPuKItERFPUFCPUJFK0FFPTQrMT01PGJyPuaVhemAiUEuIA==
 
本课配套习题挑战模式3/5
                                    单选题
                                    
                                难度系数:
                                        
                                
                                    3.如图是“北大西洋公约组织”标志的主体部分(平面图),它是由四个完全相同的四边形OABC拼成的. 测得AB=BC,OA=OC,OA⊥OC,∠ABC=36°,则∠OAB的度数是(  )
                                
                                                                    
                            
                                | A: 116° | 
| B: 117° | 
| C: 118° | 
| D: 119° | 
                                
                                
                                一次做对,真牛!
                                
                            
                        +5奖励规则>
                            - 提示1:IOWIqeeUqOWFqOetieS4ieinkuW9ouWSjOWbm+i+ueW9oueahOWGheinkuWSjOWNs+WPr+ino+WGs+mXrumimC4=
 - 答案:Qg==
							6Kej77ya4oi1QUI9QkPvvIxPQT1PQ++8jE9CPU9C77yMPGJyPuKItOKWs0FPQuKJjOKWs0NPQu+8jDxicj7iiLTiiKBPQUI94oigT0NCPe+8iDM2MC05MC0zNu+8icO3Mj0xMTfCsC4gPGJyPuaVhemAiUIuIA==
 
本课配套习题挑战模式4/5
                                    单选题
                                    
                                难度系数:
                                        
                                
                                    4.如图,已知△ABC中,∠ABC=45°,AC=4,H是高AD和BE的交点,则线段BH的长度为(  )
                                
                                                                    
                            
                                | A:  | 
| B: 4 | 
| C:  | 
| D: 5 | 
                                
                                
                                一次做对,真牛!
                                
                            
                        +5奖励规则>
                            - 提示1:IOeUseKIoEFCQz00NcKw77yMQUTmmK/pq5jvvIzlvpflh7pCRD1BROWQju+8jOivgeKWs0FEQ+KJjOKWs0JESOWQjuaxguinoy4=
 - 答案:Qg==
							6Kej77ya4oi14oigQUJDPTQ1wrDvvIxBROKKpUJD77yMPGJyPuKItEFEPUJE77yM4oigQURDPeKIoEJESO+8jDxicj7iiLXiiKBBSEUr4oigREFDPTkwwrDvvIziiKBEQUMr4oigQz05MMKw77yMPGJyPuKItOKIoEFIRT3iiKBCSEQ94oigQ++8jDxicj7iiLTilrNBREPiiYzilrNCREjvvIw8YnI+4oi0Qkg9QUM9NC4gPGJyPuaVhemAiUIuIA==
 
本课配套习题挑战模式5/5
                                    单选题
                                    
                                难度系数:
                                        
                                
                                    5.如图所示,△ABC≌△AEF,AB=AE,∠B=∠E,在下列结论中,不正确的是(  )
                                
                                                                    
                            
                                | A: ∠EAB=∠FAC | 
| B: BC=EF | 
| C: ∠BAC=∠CAF | 
| D: ∠AFE=∠ACB | 
                                
                                
                                一次做对,真牛!
                                
                            
                        +5奖励规则>
                            - 提示1:IOagueaNruWFqOetieS4ieinkuW9oueahOaAp+i0qOWPr+efpeWvueW6lOinkuebuOetie+8jOWvueW6lOi+ueebuOetie+8jOacrOmimOWPr+ino++8jOWBmumimOaXtuimgeaJvuWHhuWvueW6lOinki4=
 - 答案:Qw==
							6Kej77ya4oi14pazQUJD4omM4pazQUVG77yMQUI9QUXvvIziiKBCPeKIoEXvvIw8YnI+4oi0QkM9RUbvvIziiKBBRkU94oigQUNC77yM4oigRUFCPeKIoEZBQ++8jDxicj7iiKBCQUM94oigQ0FG5LiN5piv5a+55bqU6KeS77yM5Zug5q2k5LiN55u4562JLiA8YnI+5pWF6YCJQy4g
 
中学生网络课堂
						