Question

please answer it very urgent.​

Answer 1

Answer:

let the fourth angle be x

30°+ 70°+ 100° + x= 360°

200°+x= 360°

X = 360°- 200°

X = 160° answer.....

hope this will help you...

Answer 2

Step-by-step explanation:

the measures of three angles are 30,70 and 100

we know that the sum of all the angles is 360

therefore, 30+70+100+x=360

x=360-200

x=160°