Question

find the value of x​

Answer 1

Answer:

The exterior angle of a triangle= sum of angles of the angles of non adjacent vertex.

123-56=67

The answer is 67

Answer 2

✍First of all let us find the value of angle ACB :-

=》180° - 123° = 57°

Now, it is known that the sum of all angles of a traingle is 180°.

✍So, In triangle ABC:-

=》 57° + 56° + x = 180°

=》x = 67°, which is the required answer.