Question

if three angle of a quadrilateral are 50 degree 70 degree and 120 degree the fourth angle of the quadrilateral​

Answer 1

Step-by-step explanation:

all sum of quadrilateral is = 360°

so = 50+70+120+x= 360°

50+70+120=240

360-240=120

hence the 4side=120°

hope this will help u

Answer 2

Answer:

the angle sum property of quadrilateral is 360°

so ,let the fourth angle be x

then,50°+70°+120°+x =360°

or,240°+x=360°

or,x=360°-240°

or, x=120°

hence the fourth angle will be 120°