Question

the angle of quadrilateral are (2x+3)°,(x- 10)°,(3x+5)° and (4x + 12) ° respectively. find x​

Answer 1

Answer:

35

Step-by-step explanation:

We know that the Angle Sum of a quadrilateral = 360

so,

2x + 3 + x - 10 + 3x + 5 + 4x + 12 = 360

= 10x + 10 = 360

= 10x = 350

= x = 35

Answer 2

as sum of all angles in a Quadrilateral is 360°

so ,

${ \tt(2x + 3) + (x - 10) + (3x + 5) + (4x + 12) = 360°}$

$\tt2x + x + 3x + 4x + 3 - 10 + 5 + 12 = 360°$

$\tt10x + 10 = 360°$

$\tt10x = 360 - 10 = 350°$

so , x = 35°