Question

Three angles of a quadrilateral are 120◦, 96◦ and 58◦. Find the fourth angle​

Answer 1

Answer:

let the 4th angle be x

120+96+58+x= 360⁰

x = 360- 274

x = 86⁰

the 4th angle is 86⁰

Answer 2

Answer:

sum of all sides of quadrilateral =360

so, angle a+b+c+d =360

120+96+58+d=360

274+d=360

so, d = 360 - 274

d=86

so, fourth angle is 86.