[donh]

Eh? 

Please define a point to me. 

Please define a line. 

Please define a line segment. 

Please show me Pi as a complete number. 

EH? 

This is a pretty loopy argument. Pi clearly is defined, to the extent that any slightly abstract notion about the relationships of entities is. If you wanted to chase this overly pedantic argument down another step, you could claim nothing is defined, because it is defined in words, and when you look up to words, all you get is more words. Pi is defined well enough to put meat on the table with, and that's the telling criteria.

I'm just sort of mildly curious as to what further point you will be supporting if I concede to you that Pi is, in some significant manner, undefined?

[Radix]

Hello Mr Know-It-All

"I'm just sort of mildly curious as to what further point you will be supporting if I concede to you that Pi is, in some significant manner, undefined?"

Twenty two  divided by seven.......   That is an irrational nbr.,

 Are you prepared to define numbers which are by (universally agreed upon) definition irrational?  

Do you really want to engage me in a dialogue concerning irrational numbers?

Honestly, I am not interested in such an engagement....High School math bores me even more than you do.....