Question

In the figure, d, e, and f, are parallel lines. What is the value of x?

Answer 1

x=150

Explanation:

Since f is flat, that means that the total degrees will equal 180°.

Therefore, because of the 60° and (x-30)° angles being supplementary angles,
`60+x-30` will equal 180.

`60+x-30=180\\30+x=180\\x=150`