Question

three angles of a quadrilateral are 70,85,85 ,find the fourth angle of it​

Answer 1

Answer:

Step-by-step explanation:

sum of angles in a quadrilateral is 360

So 4th angle is =360 - 70-170

=120

Answer 2

Answer:

the sum of all interior angles of quadrilateral is 360°

let the missing angle be x.

70+85+85+x=360

240+x=360

x= 360-240

x= 120°

the fourth angle is 120°