Question

Three angle of a quadrilateral are 75°,90°,75°,the fourth angle is

Answer 1

Answer:

120°

Step-by-step explanation:

sum of total angles in a quadrilateral is 360°

75 + 90 + 75 + X = 360

X= 120

Answer 2

Answer:

sum of all angles of quadrilateral=36o

let the fourth angle be x

so, 75+90+75+x=360

240+x=360

x=360-240

x=120

hence,the fourth angle is 120