Question

find the value of unknown angle X in the given figure

Answer 1

since it's a pantagon then Sum of it's interior angle should be 540°,

therefore

110 + 120 + x + x + 30 = 540°,

260° + 2x + 540°,

then

2x=540°-260°,

2x=280°,

x=140°

Answer 2

Answer:

140

Step-by-step explanation

Total angle in pentagon

= (n-2)180

=3*180

=540 degrees

So

30+120+110+2x = 540

260+2x= 540

2x = 280

X = 280/2

X = 140