I n   f i g u r e   X   i s   t h e   b i s e c t o r   o f   B a D   a n d   B C D   . P r o v e   t h a t   A B = A D .

Dear student,

In ADC and ABCDAC=BAC    --(AX is bisector of BAD)AC=AC                --(Common)BAC=DCA    --(AX is bisector of BAD) ADCABC   --(ASA congruency)AB=AD --(CPCT)Hence proved

Regards

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