Question

in the figure angle BAD=40 then find angle BCD

Answer 1

sides AO=BO=CO=DO................radius of same circle
angles AOB=COD.............. opposite angles
triangles AOB=COD............SAS test
hence angle BAD=BCD
BAD=40
hence, BCD=40

Answer 2

Answer:

Step-by-step explanation:

We know that,

Triangles on same base have equal corresponding angles.

Here,

TriangleBAD and TriangleBCD are on same(imaginary)base BD.

Therefore, AngleBAD=AngleBCD=40