Question

three angles of a quadrilateral are 75,90 and 75 degree the fourth angle is

Answer 1

Answer:

the sum of angels of a quadrilateral is always 360.

let the 4th angel be x ,then

75+90+75+x=360

x=360-240

=120

Answer 2

Answer:

120°

Step-by-step explanation:

Sum of all angles of a quadrilateral is 360°

Three angles are 75°, 90°, 75°

Fourth angle be x.

75°+90°+75°+x=360°

240°+x=360°

x=360°-240°

x=120°

Fourth angle=x=120°