Question

4. The angles of a quadrilateral are
30 degree, 40 degree, 120 degree &
x degree, then the value of x is
O 70 degree
O 170 degree
O 270 degree
O 370 degree
O Option 2​

Answer 1

170° , if you use the rule of angles which says that the sum of all angles in a quadrilateral = 360°

Answer 2

Answer:-

taking ,

a + b + c + d = 360 degree .

30 + 40 + 120 + x = 360

190 + x = 360

x = 360 - 190

x = 170.

The value of x is 170.

THIS IS YOUR ANSWER.