Question

in the given diagram the Value of X is

Answer 1

as we know,
the sum of all angles of a quadrilateral is 360°
therefore,
50+60+80+reflex ADC=360
190+reflexADC=360
reflexADC=170
now,
reflexADC+x=360(complete Angle)
x=190
option b is the answer
hope it will help you

Answer 2

The angle X is 190 degrees.

1) Lets call the Angle ADC inside the quadrilateral be Y.

2) For any quadrilateral, the sum of all the angles is 360.

3) Hence, 50+60+80+ Y = 360

Hence, Y would be 170 degrees

4) Now the sum of angle X and Y would be 360. Since they are around the same point.

5) X+ Y = 360

x +170=360

x = 190