Question

One of the exterior angles of a triangle is 120° and the interior opposite angles of it are
in the ratio 4: 2. Find the angles of the triangle.

Answer 1

Step-by-step explanation:

4x+2x=120 (Exterior angle property)

6x=120

x=20

4x=80

2x=40

The first to angles are 80 and 40

Let the third angle be 'a'

80+40+a=180 (angle sum property)

120+a=180

a=180-120

a=60

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Answer 2

Step-by-step explanation:

4 x + 2x = 120°

6x=120°

x=120/6

x=20°