 
       
      
    6.  In Fig,  and 
. Show that 
    
 
                
                  From the given figure following result can be drawn :-     
Adding  to the both sides, we get :                    
                                               
Now consider   and   
 ,    :-
(i)                           (Given)
(ii)                  (proved above)
(iii)                         (Given)
Thus by SAS congruence we can say that :                                   
Hence by c.p.c.t., we can say that :   
 
                