Question

I’m confused, mostly on 4. How can you prove it, and are they parallel?

Answer 1

It is parallel and yes you can prove it.

Explanation:

I would use a tool that you can use to figure out the angle, check all the corners and if the smaller one are the same and the wider corners are the same then then would be parallel. That only works though if there was a line going through like your problems. If you had a graph it would be easier.