Question

three angles of quadrilateral are 30,150,100 and find the 4th angle ?

Answer 1

4th angle =

360 -(30+100+150)

360 -280

80

Answer 2

Answer:

80

Explanation:

the sum of all angle of a quadrilateral is 360

let forth angle be x

then

x+30+150+100=360

x+280=360

x=360-280

x=80°