Question

8. In the given figure, find x.

​

Answer 1

I don't know any special Formula, than Imagination.

You can see in the figure that both the angles 100° and x° have one arm same as straight .

And one arm is different then other and this is done by the 25° angle.

As you can see the 25° angle rotates from left to right (clockwise) , increasing one arm.

Therefore, 100 + 25 = 125° = x

Answer 2

this is your answer mate