In the given figure, if AB = AC and D is the midpoint of BC, then triangle ADB is congruent to triangle ADC by
In △ABD and △ACD
(i) AB = AC .........(given)
(ii) BD = CD .........(D is midpoint of BC)
(iii) AD = AD ..........(common side)
∴△ABD≅△ACD
(SSS congruency)