Question

if three angles of quadrilateral are 100°,75° and 105° then the measure of the fourth angle is​

Answer 1

Answer:

80°

Step-by-step explanation:

let the fourth angle be x

x+100°+75°+105°=360°

x+280°=360°

(x=80°)

hope it helps...

Answer 2

Answer:

80 degree

100+75+100+a=360

280+a=360

a=360-280

ans,80