Question

an trangle has 3 angles 120 degree, x degree, 2x degree
what is x

Answer 1

Answer: we know sum of all the angles in a triangle is 180 degree

Now,

By angle some property

180=120+x+2x

180-120=3x

60=3x

20=x

Step-by-step explanation:

Answer 2

Answer :

1st angle = 120°

other two angles = x , 2x

According to question

120° + x + 2x = 180° ( by angle sum property of triangle )

120° + 3x =180°

3x = 180° - 120°

3x = 60°

x= 60°\ 3

x = 20°