Question

Use the figure to answer the question:
If a || b, what is the value of x?

Answer 1

I can help you. You need to use the supplementary angle thing to figure this out! Like this:

Answer 2

That means this, as well:

Answer 3

Now the 136 and the (x+21) need to add up to equal 180. So the set up is this:

Answer 4

136+ (x+21) = 180

Answer 5

136 + 21 + x = 180

Answer 6

157 + x = 180

Answer 7

x = 180 - 157

Answer 8

x = 23

Answer 9

thanks for the help