Question

plz solve this ............ . ​

Answer 1

17. draw perpendicular AD

then it prove that

by using side side side proved

or

in triangle ABC

AB=AC then

angle ABC =angle ACB. ......1

similarly

in triangle BCD

DB=DC then

angle DBC =angle DCB. .......2

from eq 1&2 we get

angle ABD =angle ACD