Question

If three angles of a quadrilateral are 45° , 120° and 110° , then the fourth angle will be a) 360° b) 90° c) 85° d)140°

Answer 1

Answer:

c)85°

Step-by-step explanation:

sum of all angles of a quadrilateral=360°

let the fourth angle be x

45°+120°+110°+x=360°

275°+x=360°

x=360°-275°

x=85°