Question

if
of three angle of a parallelograns
60, 120, 60° then the fourth angle
will be of the measure
600 6) 120° c) 1800 d) 360°
​

Answer 1

Answer:

Let the fourth angle be 'x'.

Now,

$➪ \: 60°+80°+120°+x=360$

(Angle sum property of a quadrilateral)

$➪ \: x+260°=360°$

$➪ \: x=360-260$

$➪ \: x=100°$

Answer 2

Answer:

b) 120

Step-by-step explanation:

Sum of angles of quadrilateral = 360 degrees

60 + 120 + 60 + x = 360

240 + x = 360

x = 120