Since vertical angles are congruent, we can set up an equation to find the value of x:
40 + 2x = 120
Now we need to solve for x:
2x = 80
x = 40
Therefore, the value of x is 40.
Vertical angles are shown below. Vertical angles are congruent (=)
Find the value of x. (Remember to set up an equation)
1 answer