Question

In
Δ
A
B
C
,
A
B
=
A
C
,

∠
A
=
40
∘
.
O
is a point inside
Δ
A
B
C
such that
∠
O
B
C
=
∠
O
C
A
. Find the measure of
∠
B
O
C
.

Answer 1

Answer:

What is this question but this congruence conditions of triangle by A .s. A rule