Need help with geometry: statements snd Reasons

[KimberleeRoss]

Given: a//b, c//d

prove:angle 1 and angle 4 are supplementary

 

[stapel]

Given: a//b, c//d

What are the doubled division signs (that is, the slashes) being used to indicate? What are a, b, c, and d?

prove:angle 1 and angle 4 are supplementary

How do the angles relate to the points (?) provided earlier? If you are looking at some picture, please note that we can't see into your room, so you'll need to describe it to us.

When you reply, please include a clear listing of your thoughts and efforts so far, including the theorem or rule you've applied, so we can see where you're getting stuck. Thank you!