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Probably should have a diagram rather than an incredibly verbose description. -- smadge1 ( talk) 11:59, 23 August 2009 (UTC) reply

I assume you're referring to my description. It was not an especially easy concept to describe, and it can sometimes take quite a few words to describe something clearly. I don't apologize for using more words than some might like, if they are needed to make it clear.

Feel free to add a diagram, if you know of a usable one, or can create it. I don't know of a plan, and don't have the graphical skills to create one; so in the absence of that I assume the description is better than nothing. M.J.E. ( talk) 11:26, 12 December 2009 (UTC) reply

No offence intended, but it isn't even clear with all those words and the unnecessary diversion explaining the difference between the US and non-US meaning of trapezium only serves to confuse further. A picture is worth a thousand words. 83.104.249.240 ( talk) 14:18, 20 November 2012 (UTC) reply