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Q : 2      \small ABCD is a quadrilateral in which \small AD=BC and \small \angle DAB= \angle BAC   (see Fig.). Prove that   

               (iii) \small \angle ABD= \angle BAC.

                                                

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In the first part we have proved that   \small \Delta ABD\cong \Delta BAC.

Thus by  c.p.c.t. , we can conclude :  

                                                                   \small \angle ABD= \angle BAC

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Devendra Khairwa

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