Question

How do i determine the value of x?

Answer 1

Considering that you are trying to find 'x' it is best to make an equation!

Explanation:

To find 'x' you must first make an equation!

Since both are the same lengths, you can put these two equal to each other!

(2x - 10)° = 120°

Then solve like normal!

2x - 10° = 120°

+10° = +10°

--------------------

2x = 130°

(Then divide both sides by 2)

2x/2 = 130/2

x = 65°

Answer 2

x=65

Explanation:

When angles are across from eachother like that their values are the same.

so you set them equal to eachother.

120 = 2x - 10

130 = 2x add 10 to both sides

130/2 = 2x/ 2 divide both sides by 2

65 = x