Question

If the angle of quadrilateral is 45,135,2x,X+15 find the value of x

Answer 1

Given: angles of quadrilateral are 45°, 135°, 2x, x+15                        

To find: value of x                        

Step-by-step explanation:

Since we know that sum of all the angles of a quadrilateral is 360°

∴ 45+135+2x+x+15= 360

⇒195+3x=360

⇒3x=360-195

⇒x=165÷3

⇒x=55

∴ 2x= 2×55=110

    x+15 = 55+15 = 70

Answer: Angles of the quadrilateral are 45° , 135° , 110° and 70°