Question

One of the exterior angles of a triangle is 120° and the interior opposite angel are in ratio 1:2. Find the angle of the triangle. ​

Answer 1

Let the two interior opposite angles be 1x and 2x .

According to the problem

1x+2x=120°

3x=120°

x=(120/3)°

x=40°

So the first angle is 1x=40°

and the second angle is 2x= 40× 2 = 80°

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Answer 2

Answer:

angle = 40

Step-by-step explanation:

ratio of interior angles = 1:2

angle 1=x, angle 2=2x

exterior angle =sum of opp. interior angles

120= x+2x

120=3x

x=120/3

x=40

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