Question

Find X in figure _________?​

Answer 1

Step-by-step explanation:

$\large\bf\red{Quadrilateral}$

A four sided figure is called as Quadrilateral. Quadrilateral has 4 side amd 4 angles. The sum of all four angle of quadrilateral is 360°

Lets take the following figure as □ ABCD and A=30°, B=120°,C=90°,D=x

We know that The sum of all angles od quadrilateral is 360°.

= A + B + C + D = 360°

= 30 + 120 + 90 + D = 360°

= 240 + x = 360°

∴ D = 360 - 240

∴ D = 120

∴ D = x = 120°

$\large\bf\red{x = 120 Degree}$