Question

please give me a answer.​

Answer 1

Answer:

AB = AC

angle 1 = angle 2

In triangle ABD & triangle ACD

AB = AC (given)

angle 1 = angle 2 (given)

AD = DA (common)

By SAS,

triangle ABD congruence to triangle ACD

angle ABD = angle ACD (by CPCT)

BD = CD (by CPCT)

=> angle DBC = angle DCB (angles opposite to

equal sides)

Hence proved.