Lie on a strought A B and c
line
A
B
BO=CD
LBC D = 60 and LBADS
out X
work

25°

Step-by-step explanation:

In

BD = CD .....(Given)

(By isosceles triangle theorem)

Now,

(Angles in linear pair)

Next, in

(By interior angle sum postulate of a triangle)

just a quick addition to the great work by Hrish ii above.

Check the picture below.

bearing in mind that twin sides stemming out of a vertex, BD and CD, make twin angles.

this is false ^.^ lol