Question

Three angles of a quadrilateral are 75°, 90°and 75°, the fourth angle is
(a) 90°
(b) 95°
(c) 105°
(d) 120°​

Answer 1

Answer:

Angle sum property of quadrilateral =360

=75+90+75+ fourth angle =360

=240 + fourth angle=360

=fourth angle =360-240 =120

Therefore,fourth angle is 120