Question

three angles of a quadrilateral are respectively equal to 110, 50, and 40.
Find its fourth angles.​

Answer 1

Answer:

let the fourth angle be x

110+50+40+x=360

200+x=360

x=360-200

x=160

fourth angle is 160

Answer 2

Answer:

Three triangle angle : 110+50+40=200

Total angle of triangle :360

360-200=160

Forth angle is160.