Question

in the given figure...what's the value of x?? explain..​

Answer 1

Sum of all the interior angles of the figure = 360° { since, It is a quadrilateral because it has 4 vertices }

So,

The fourth angle of the 4 interior angles of the quadrilateral is ( 360 - x ) because the angle x is the linear pair of the fourth angle and at a point the angle is 360°

So,

☛ 10 + 20 + 60 + 360 - x = 360

☛ 90 + 360 - x = 360

☛ -x = 360 - 450

☛ -x = -90

☛ x = 90

Hence, the value of x is 90