In the figure, the value of x is 115
How to find the value of x
Create a line from x to 130 degrees
We have an equilateral triangle. This line divides x into 60 and 60-x
Using Isosceles triangle theorem, the fourth apex angle is x - 60
The sim of angles of a quadrilateral is 360, and we have the equation
x + 60 + 130 + x - 60 = 360
2x = 360 - 130
2x = 230
x = 115