Question

Find the value of the unknown exterior angle 'x' ​

Answer 1

Answer:

3x + 2x + (180 - 120) = 180°

(since the sum of interior angle in a triangle is 180°)

solving the equation, we get

5x + 60° = 180.

transpose,

5x = 180 - 60 = 120.

x = 120/5

= 24°

Therefore x = 24°

Answer 2

Step by step explain

120°+3x+5x=180(Linear pair)

120°+5x=180°

5x=180°-120°

5x=60°

x=60/5

x=12

So x=12

2x=2×12=24

3x=3×12=36