[Mike O]

Ok another book cover example

Put your book against a wall so that when the book is open the books contents are facing the wall. As the two covers extend on to infinity and cut through this wall the lines of intersection will be parallel.

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Mr. Kelley - I mean Mathew
One thing at a time- call me stupid or maybe I just have a communication problem with engineers or similar type folks. So how does your quote above differ from my explanation of parallel.

Let me guess:
In your example, the wall is vertical and the spine is closest to me- and the book is spread open- so the front cover is say angled 45 degrees toward the sky and the back cover is aimed 45 degrees towards the ground - and both are going through the wall at the same angle but different directions? And that's parallel? Just guide me through this example if I missed it- and be very clear so that I can visualize what your describing.

Anotherwords, was my definition of each point opposite from the the other plane - being the same distance not correct? Are we talking the plane surfaces parallel or the plane lines parallel or the plane edges parallel- still need help.
Thanks,
Mike